CN105529406A - Organic Light Emitting Components - Google Patents

Abstract

The invention discloses an organic light emitting component. The light emitting component comprises a first electrode, a second electrode which is opposite to the first electrode, a light emitting layer clamped between the first electrode and the second electrode and a hole transport region clamped between the first electrode and the light emitting layer.

Description

Organic Light Emitting Components

technical field

The invention relates to an organic light-emitting element.

Background technique

An organic light-emitting device (organic light-emitting device) is a self-luminous device that has a wide viewing angle and excellent contrast. Not only that, it also has a fast response speed, and has excellent characteristics in terms of luminance, driving voltage, and response speed. Realize the advantages of variety.

The organic light-emitting device may have a structure in which an anode, a hole transport region, a light emitting layer, an electron transport region, and a cathode are sequentially formed. The holes injected from the positive electrode move to the light emitting layer through the hole transport region, and the electrons injected from the negative electrode move to the light emitting layer through the electron transport region. Carriers such as the holes and electrons recombine in the light-emitting layer region to generate excitons. The excitons transition from an excited state to a ground state and generate light.

Contents of the invention

The object of the present invention is to provide an organic light-emitting device that has excellent color coordinates and achieves a balance between holes and electrons injected into the light-emitting layer, thereby improving both efficiency and lifetime.

According to one aspect of the present invention, an organic light emitting element is provided, comprising:

first electrode;

a second electrode opposite to the first electrode;

a light emitting layer interposed between the first electrode and the second electrode; and

a hole transport region interposed between the first electrode and the light-emitting layer,

Wherein, the light emitting layer includes an organometallic compound represented by the following Chemical Formula 1, and the hole transport region contains a first compound represented by the following Chemical Formula 2,

<chemical formula 1>

M(L1) _n1 (L2) _n2

In said chemical formula 1,

M is selected from Ir, Pt, Os, Ti, Zr, Hf, Eu, Tb, Tm and Rd,

L1 is a ligand represented by the following chemical formula 1A,

L2 is a ligand represented by the following chemical formula 1B,

L1 and L2 are different from each other,

n1 and n2 take 1 or 2 independently of each other, n1+n2=2 or n1+n2=3, when n1 is 2, two L1s are the same or different, when n2 is 2, two L2s are the same or different,

<chemical formula 2>

<Chemical formula 2-1>

In each chemical formula,

CY ₁ and CY ₂ are independently selected from C ₅ -C ₆₀ ring groups and C ₂ -C ₆₀ heterocyclic groups, and CY ₁ and CY ₂ are connected to each other with a single bond,

Y ₁ to Y ₄ independently take carbon or nitrogen, Y ₁ and Y ₂ are connected to each other by a single bond or a double bond, Y ₃ and Y ₄ are connected to each other by a single bond or a double bond,

CY ₃ to CY ₆ are independently selected from C ₅ -C ₄₀ cyclic groups, C ₂ -C ₄₀ heterocyclic groups and substances shown in Chemical Formula 2-1,

In the chemical formula 2-1, A ₁ and A ₂ are independently selected from C ₅ -C ₂₀ cyclic groups and C ₂ -C ₂₀ heterocyclic groups,

X ₁ is selected from N-(L ₃ ) _lb3 -Ar ₂ , oxygen atom, sulfur atom, C(R ₁₃ )(R ₁₄ ), Si(R ₁₅ )(R ₁₆ ),

L ₁ to L ₃ are independently substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene, substituted or unsubstituted C ₆ -C ₆₀ arylene, substituted or unsubstituted C ₁ -C ₆₀ heteroalkylene Aryl, -N(Q _1a )-, substituted or unsubstituted 2-valent non-aromatic condensed polycyclic groups, substituted or unsubstituted 2-valent non-aromatic heterocondensed polycyclic groups,

Ar ₁ and Ar ₂ are independently substituted or unsubstituted C ₆ -C ₆₀ aryl, or substituted or unsubstituted C ₁ -C ₆₀ heteroaryl,

R ₁ to R ₅ and R ₉ to R ₁₆ are independently selected from a hydrogen atom, a heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, Hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenyl, substituted or unsubstituted Substituted C ₂ -C ₆₀ alkynyl, substituted or unsubstituted C ₁ -C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycle Alkyl, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ) and -B(Q ₆ )(Q ₇ ),

R ₆ to R ₈ are independently selected from C ₁ -C ₁₀ alkyl groups and C ₁ -C ₁₀ alkyl groups substituted by at least one of the following groups: heavy hydrogen atom, -F, -Cl, -Br , -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt,

Among them, substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted C ₃ - C ₁₀ cycloalkylene, substituted C ₆ -C ₆₀ arylene, substituted C ₁ -C ₆₀ heteroarylene, substituted monovalent non-aromatic condensed polycyclic group, substituted 1 At least one of the substituents of the valent non-aromatic heterocondensed polycyclic group, the substituted divalent non-aromatic condensed polycyclic group, and the substituted divalent non-aromatic heterocondensed polycyclic group is selected from the following group Choose from:

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group C ₁ -C ₆₀ alkyl of at least one of -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ) and -B(Q ₁₆ )(Q ₁₇ ) , C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl and C ₁ -C ₆₀ alkoxy;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group;

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ Heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group; and

-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ),

Wherein, said Q ₁ to Q ₇ , Q ₁₁ to Q ₁₇ , Q ₂₁ to Q ₂₇ , Q ₃₁ to Q ₃₇ are independently selected from deuterium atom, -F, -Cl, -Br, -I, hydroxyl, cyano , nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ hetero Cycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, Choose from 1-valent non-aromatic heterocondensed polycyclic groups,

Said Q _1a is selected from substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups,

a ₁ and a ₂ are independently selected from integers from 0 to 5,

a ₃ choose from integers from 0 to 2,

a ₄ , b ₁ to b ₅ , and lb ₁ to lb ₃ are independently selected from the integers of 0 to 4. When a ₄ is selected to be 2 or more, multiple R ₅ can be condensed on the connected benzene ring to form a condensed ring,

nb ₁ is 0 or 1,

nb ₂ chooses from integers from 0 to 2,

When one or more of a ₁ to a ₄ is 2 or more, R ₁ , R ₂ , R ₄ or R ₅ of 2 or more among R ₁ , R ₂ , R ₄ , and R ₅ are the same or different,

When one or more of b ₁ to b ₅ is 2 or more, among Ar ₁ and R ₉ to R ₁₂ , Ar ₁ or R ₉ to R ₁₂ of 2 or more are the same or different,

When one or more of lb ₁ to lb ₃ is 2 or more, L ₁ to L ₃ of 2 or more among L ₁ to L ₃ are the same or different,

Wherein, "*" and "*'" are the bonds between the chemical formula 1 and M.

In the present invention, the organometallic compound represented by the chemical formula 1 is used as a dopant of the light-emitting layer, and the first compound represented by the chemical formula 2 is applied to the hole transport region, thereby having excellent color coordinates, and Improved efficiency and lifetime characteristics.

Description of drawings

FIG. 1 is a schematic cross-sectional view of an organic light emitting element according to an implementation example.

detailed description

FIG. 1 is a schematic cross-sectional view of an organic light emitting element according to an implementation example of the present invention.

Referring to FIG. 1 , the organic light emitting element 10 includes: a first electrode 110 , an organic layer 150 , and a second electrode 190 .

A substrate may be additionally disposed on a lower portion of the first electrode 110 or an upper portion of the second electrode 190 . As the substrate, glass substrates or transparent plastic substrates with excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water resistance can be used.

The first electrode 110 can be formed by providing the substance for the first electrode onto the upper portion of the substrate by, for example, deposition or sputtering. When the first electrode 110 is a positive electrode, the substance for the first electrode may be selected from substances having a high level of work function in order to easily inject holes. The first electrode 110 may be a reflective electrode, a semi-transmissive electrode or a transmissive electrode. As the material for the first electrode, indium tin oxide (ITO), indium zinc oxide (IZO), tin dioxide (SnO ₂ ), zinc oxide (ZnO), etc. that are transparent and have excellent conductivity can be used. Alternatively, in order to form the first electrode 110 as a semi-transmissive electrode or a reflective electrode, magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca ), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag) at least one. The first electrode 110 may have a single-layer structure, or a multi-layer structure including a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO/Ag/ITO, but is not limited thereto.

The organic layer 150 is arranged on the top of the first electrode 110 . The organic layer 150 includes a light emitting layer. The organic layer 150 may further include: a hole transport region interposed between the first electrode and the light emitting layer, and an electron transport region interposed between the light emitting layer and the second electrode.

The light emitting layer according to an implementation example includes an organometallic compound represented by Chemical Formula 1 below.

<chemical formula 1>

M(L1) _n1 (L2) _n2

In the chemical formula 1, M can be selected from iridium (Ir), platinum (Pt), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), Choose between Thulium (Tm) and Rhodium (Rd).

For example, M can be selected from Os, Ir and Pt. As another example, M may be Ir.

L1 is a ligand represented by the following Chemical Formula 1A.

L2 is a ligand represented by the following Chemical Formula 1B.

L1 and L2 may be different from each other.

n1 represents the number of L1, and can be 1 or 2. When n1 is 2, the two L1 may be the same or different.

n2 represents the number of L2, and can be 1 or 2. When n2 is 2, the two L2 can be the same or different. n1+n2=2 or may be n1+n2=3. For example, n1+n2=3 may be satisfied.

In the chemical formula 1A, CY1 and CY2 may be independently selected from a C ₅ -C ₆₀ cyclic group and a C ₂ -C ₆₀ heterocyclic group. CY1 and CY2 can be connected to each other through a single bond. Optionally, CY1 and CY2 can be connected to each other through a linking group.

Y ₁ to Y ₄ may independently take carbon (C) or nitrogen (N). For example, _Y1 may be N, and _Y2 to _Y4 may be C, but are not limited thereto. Y ₁ and Y ₂ may be connected to each other through a single bond or a double bond, and Y ₃ and Y ₄ may be connected to each other through a single bond or a double bond.

Specifically, CY ₁ and CY ₂ can be independently selected from: phenyl, naphthyl, fluorenyl, spirofluorenyl, indolyl, indenyl, furyl, thienyl, carbazolyl, benzofuryl , benzothienyl, dibenzofuryl, dibenzothienyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, triazolyl, pyridyl , pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, triazinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, naphthyridinyl, benzimidazolyl, Benzoxazolyl, isobenzoxazolyl, oxadiazolyl, but not limited thereto.

For example, CY1 can be selected from pyrrolyl, imidazolyl, triazolyl, oxadiazolyl, pyridyl, pyrimidinyl, pyrazinyl, quinolinyl, isoquinolyl, triazinyl.

For example, _CY can be selected from phenyl, naphthyl, furyl, thienyl, pyridyl, pyrimidinyl, pyrazinyl, triazinyl, fluorenyl, carbazolyl, indolyl, oxadiazolyl, benzo Select from furyl, benzothienyl, dibenzofuryl, dibenzothienyl.

As another example, CY1 can be selected from pyridyl, isoquinolyl, imidazolyl, triazolyl, and CY2 can be selected from phenyl, furyl, thienyl, pyridyl, pyrimidinyl, pyrazinyl, phenyl-carba Azolyl, indolyl, oxadiazolyl, benzofuryl, benzothienyl, dibenzofuryl, dibenzothienyl, but not limited thereto.

As another example, CY ₁ can be selected from pyridyl, pyrimidyl, triazinyl, quinolinyl, isoquinolyl, oxadiazolyl, triazolyl, imidazolyl.

CY ₂ can be selected from phenyl, pyridyl, pyrimidyl, dibenzofuryl, dibenzothienyl, thienyl, benzothienyl, furyl, benzofuryl, indolyl, carbazolyl .

In the chemical formula 1A and chemical formula 1B, R ₁ to R ₅ can be independently selected from a hydrogen atom, a heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidine group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenes substituted or unsubstituted C ₂ -C ₆₀ alkynyl, substituted or unsubstituted C ₁ -C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, Substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted or unsubstituted monovalent non- Aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ) and -B(Q ₆ )(Q ₇ ).

Specifically, R ₁ to R ₅ can be independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthacenetetraphenyl, perylenyl, perylenyl, phenoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salts, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, diphenyl And fluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, At least one of the following substances: phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacenenyl, acenaphthyl Base, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, base, naphthacenetetraphenyl, perylenyl, perylenyl, phenoxy.

R ₆ to R ₈ can be independently selected from:

C ₁ -C ₁₀ alkyl; and

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or C ₁ -C ₁₀ alkyl substituted by at least one of its salts.

For example, R6 to _R8 can be selected from methyl, ethyl, n _- propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert _- butyl, and R6 to _R8 can be the same.

Among them, substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted monovalent non At least one of the substituents of the aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group is selected from the following group:

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C _{6 0} aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group C ₁ -C ₆₀ alkane of at least one of group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ) and -B(Q ₁₆ )(Q ₁₇ ) Base, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl and C ₁ -C ₆₀ alkoxy;

C ₃ -C ₁₀ epoxy, C ₁ -C ₁₀ heterocyclyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocyclic alkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ ring of at least one of )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ) Alkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C _1- C ₆₀ heteroaryl, monovalent Non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups; and

-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ).

Wherein, said Q ₁ to Q ₇ , Q ₁₁ to Q ₁₇ , Q ₂₁ to Q ₂₇ , Q ₃₁ to Q ₃₇ are independently selected from deuterium atom, -F, -Cl, -Br, -I, hydroxyl, cyano , nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ hetero Cycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, Choose from 1-valent non-aromatic heterocondensed polycyclic groups.

In the chemical formulas 1A and 1B, a ₁ , a ₂ , a ₃ and a ₄ respectively represent the numbers of R ₁ , R ₂ , R ₄ and R ₅ .

a1 and a2 are independently selected from _integers of ₀ to 5.

a ₃ is selected from integers from 0 to 2.

a ₄ , b ₁ to b ₅ , and lb ₁ to lb ₃ are independently selected from integers of 0 to 4.

Optionally, when a ₄ is 2 or more, multiple R ₅ can be condensed on the connected benzene rings to form a condensed ring. For example, multiple _R5 can be condensed to the benzene ring to which they are attached to form a naphthyl chain ring.

When one or more of a ₁ to a ₄ is 2 or more, among R ₁ , R ₂ , R ₄ and R ₅ , R ₁ , R ₂ , R ₄ or R ₅ of 2 or more may be the same or different. For example, when a ₁ is 2, the two R ₁ may be the same or different. Also, when a ₄ is 2 or more, two R ₅ may be the same or different.

"*" and "*'" are the bonds between the chemical formula 1 and M.

For example, the organometallic compound represented by the Chemical Formula 1 may be selected from the following compounds PD-1 to PD-193, but is not limited thereto.

The light emitting layer may include a dopant and a host. The organometallic compound may be included in the light emitting layer as a dopant. The organometallic compound may emit green light or red light. The light emitting layer may be a green light emitting layer or a red light emitting layer.

The main agent, for example, can use CBP (4,4'-N,N'-dicarbazolyl-biphenyl), CDBP (4,4'-bis(9-carbazolylene)-2,2'- Dimethylbiphenyl), mCP(N,N'-dicarbazolylene-3,5-phenyl, N,N'-dicarbazolylene-3,5-phenyl), TCP(1,3 ,5-tris(carbazolyl-9-ylidene)phenylene, 1,3,5-Tris(carbazolyl-9-yl)phenyl), TCTA (tris(4-carbazolylidene-9-ylidene) phenyl)amine, tris(4-carbazolyl-9-ylphenyl)amine), PVK (poly(n-vinylcarbazolyl)), but not limited thereto.

Alternatively, the main agent may include a compound represented by one of Chemical Formula 301 to Chemical Formula 303 below.

<chemical formula 301>

<chemical formula 302>

<chemical formula 303>

<Chemical Formula 303-1>

In said chemical formulas 301 to 303 and chemical formula 303-1, Ar ₃₀₁ is selected from:

Naphthalene, heptalene, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalene, phenanthrene, anthracenyl ( anthracene), fluoranthene (fluoranthene), triphenylene (triphenylene), pyrene (pyrene), Chrysene, naphthacene, picene, perylene, pentaphene, indenoanthracene; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C _{6 -C 60} aryl Thio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group and -Si(Q ₃₀₁ )(Q ₃₀₂ )(Q ₃₀₃ )( The Q ₃₀₁ to Q ₃₀₃ are independently selected from hydrogen atom, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₆ -C ₆₀ aryl, C ₁ -C ₆₀ heteroaryl) At least one of naphthyl, heptacene, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl , base, naphthacene, perylenyl, perylenyl, penfenyl, indenanthracenyl.

Wherein, A ₃₀₁ to A ₃₀₄ are independently from phenyl, naphthyl, pyridyl, pyrimidyl, pyrazinyl, quinolinyl, isoquinolyl, 2,6-naphthyridine (naphthyridine), 1,8 -Naphthyridinyl, 1,5-naphthyridinyl, 1,6-naphthyridinyl, 1,7-naphthyridinyl, 2,7-naphthyridinyl, quinoxalinyl, phthalazine, quinazolinyl choose.

A ₃₀₅ is selected from phenyl and naphthyl.

A ₃₀₆ is represented by Chemical Formula 303-1.

X ₃₀₁ from N-[(L ₃₀₂ ) _la2 -(R ₃₀₂ ) _ma2 ], oxygen atom (O), sulfur atom (S), C(R ₃₀₇ )(R ₃₀₈ ), Si(R ₃₀₇ )(R ₃₀₈ ) , B(R ₃₀₇ ), P(R ₃₀₇ ), and P(=O)(R ₃₀₇ ).

L ₃₀₁ to L ₃₀₃ independently follow the content described for L ₂₀₁ in this specification.

R ₃₀₁ and R ₃₀₂ are independently selected from:

C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid Base or its salt, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one C ₁ -C ₂₀ alkyl and C ₁ -C ₂₀ alkoxy selected from the azinyl group;

Phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, triazine base; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

Wherein, R ₃₀₃ to R ₃₀₈ independently follow the description of Q ₂₀₁ in this specification.

la1 to la3 are selected from 0, 1, 2 and 3 independently of each other.

ma1 to ma6 are selected from 1, 2, 3, 4, 5 and 6 independently of each other.

na1 chooses from 1, 2, 3 and 4.

For example, in the chemical formula 301, L ₃₀₁ to L ₃₀₃ are independently selected from:

Phenylene, naphthylene, fluorenyl, spirofluorenyl, benzofluorenylene, dibenzofluorenylene, phenanthrene, anthracene, pyrenylene, pyrene base; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, phenylene, naphthylene, fluorenyl, spirofluorenyl, benzofluorenylene, dibenzofluorenylene, phenanthrene, anthracenylene, pyrenylene, base,

Wherein, R ₃₀₁ and R ₃₀₂ are independently selected from:

C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid Base or its salt, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, C ₁ -C ₂₀ alkyl and C ₁ -C ₂₀ alkoxy selected from at least one group;

Alkyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, base; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, base. However, it is not limited to this.

For example, the main agent may include a compound represented by one of the following chemical formulas 301B, 301C, 302A, 303A, 303B, 303C, 303D, 303E, 303F, 303G, 303H, 303I, and 303J.

<chemical formula 301B>

<chemical formula 301C>

<chemical formula 302A>

For the description of the substituents in the chemical formulas 301B, 301C, 302A, 303A, 303B, 303C, 303D, 303E, 303F, 303G, 303H, 303I and 303J, please refer to the content recorded in this specification.

The compound represented by one of the Chemical Formulas 301 to 303 may be selected from the following compounds H43 to H129, but is not limited thereto.

In the light-emitting layer, the content of the dopant can be selected within a range of, for example, about 0.01 to 15 parts by weight relative to about 100 parts by weight of the main agent, but is not limited thereto.

The thickness of the light-emitting layer can be, for example, to around, or about to When the thickness of the light-emitting layer satisfies the aforementioned range, excellent light-emitting characteristics can be exhibited without a substantial increase in driving voltage.

When the organic light-emitting element is a full-color organic light-emitting element, the light-emitting layer can be patterned into a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer. Alternatively, the light-emitting layer may have a structure in which a red light-emitting layer, a green light-emitting layer, and/or a blue light-emitting layer are stacked, whereby white light can be emitted, and various modifications of this type can be realized.

The hole transport region may include a first compound represented by Chemical Formula 2 below.

<chemical formula 2>

<Chemical formula 2-1>

In the chemical formula 2,

CY ₃ to CY ₆ are independently selected from a C ₅ -C ₄₀ cyclic group, a C ₂ -C ₄₀ heterocyclic group, and the group shown in Chemical Formula 2-1.

In the chemical formula 2-1, A ₁ and A ₂ are independently selected from C ₅ -C ₂₀ cyclic groups and C ₂ -C ₂₀ heterocyclic groups.

X ₁ is selected from N-(L ₃ ) _lb3 -Ar ₂ , oxygen atom (O), sulfur atom (S), C(R ₁₃ )(R ₁₄ ), and Si(R ₁₅ )(R ₁₆ ).

L ₁ to L ₃ are independently substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene, substituted or unsubstituted C ₆ -C ₆₀ arylene, substituted or unsubstituted C ₁ -C ₆₀ heteroalkylene An aryl group, -N(Q _1a )-, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic group are selected.

Ar ₁ and Ar ₂ may be independently substituted or unsubstituted C ₆ -C ₆₀ aryl groups, or substituted or unsubstituted C ₁ -C ₆₀ heteroaryl groups.

R ₉ to R ₁₆ can be independently selected from a hydrogen atom, a heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or Its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenyl, substituted or unsubstituted C ₂ - C ₆₀ alkynyl, substituted or unsubstituted C ₁ -C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl, substituted or Unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ Aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or Unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), and -B(Q ₆ )(Q ₇ ) to choose from.

Regarding substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted C ₃ -C ₁₀ heteroalkylene groups, substituted C ₆ -C ₆₀ arylene groups, substituted C ₁ -C ₆₀ heteroarylene groups, substituted 1-valent and 2-valent non-aromatic condensed polycyclic groups, substituted For the description of the substituents of the 1-valent and 2-valent non-aromatic heterocondensed polycyclic groups, for the description of Q ₁ to Q ₇ , Q ₁₁ to Q ₁₇ , Q ₂₁ to Q ₂₇ and Q ₃₁ to Q ₃₇ , see The previous descriptions related to R ₁ to R ₅ .

The Q _1a can be substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted A substituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group are selected.

b ₁ to b ₅ and lb ₁ to lb ₃ are independently selected from integers of 0 to 4.

nb ₁ is 0 or 1.

nb ₂ can be selected from integers of 0 to 2.

b ₁ to b ₅ represent the numbers of Ar ₁ and R ₉ to R ₁₂ respectively, and lb ₁ to lb ₃ represent the numbers of L ₁ to L ₃ respectively.

When b ₁ is 2 or more, Ar ₁ of 2 or more may be the same or different, and may be connected to the same L ₁ .

When lb ₁ to lb ₃ are 2 or more, L ₁ to L ₃ that are 2 or more among L ₁ to L ₃ may be the same or different. For example, when lb ₁ is 0, L ₁ can be a single bond. For example, when lb ₁ is 3, the three connected L ₁ may be the same or different.

When one or more of b ₁ to b ₅ is 2 or more, R ₉ to R ₁₂ that are 2 or more among R ₉ to R ₁₂ may be the same or different. For example, when b ₃ is 2, two R ₁₀ may be the same or different.

In said chemical formula 2, the P moiety represented by the dotted line It may be represented by one of the following chemical formulas P1 to P26. And, the Q part indicated by the dashed line It may be represented by one of the following chemical formulas P1 to P26, Q1 to Q13.

In the above chemical formula, Z ₁₁ to Z ₁₄ are independently selected from hydrogen atoms, C ₁ -C ₁₀ alkyl groups, and C ₆ -C ₂₀ aryl groups.

"*" is L ₁ , L ₃ or a bond position of a substituent.

Specifically, in the chemical formula 2, Ar ₁ and Ar ₂ are independently selected from:

Phenyl, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthyl Acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthryl, fluoranthene ( fluoranthenyl), triphenylenyl (triphenylenyl), pyrenyl (pyrenyl), Chrysenyl, naphthacenyl, picenyl, perylenyl, pyrrolene, thienyl, furyl, imidazolyl, pyrazolylene, thiazolyl , isothiazolylene, oxazolylene, isoxazolylene, pyridyl, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene , isofuryl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, lininyl, Carbazolyl, phenanthrene, acridinyl, phenanthroline, phenazinyl, benzofluorenyl, benzimidazole, benzofurylidene, benzothiophenylene, benzoylidene Thiazolyl, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuran Dibenzothienylene, benzocarbazolylene, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )( Q ₂₅ ) at least one of the following substances:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

The Q ₂₁ to Q ₂₅ can be independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracenyl, Pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthryl, Phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl substituted by any one of triperylenyl and fluorenyl.

L ₁ to L ₃ can be independently selected from:

Direct bond, phenylene, pentalenylene, indenylene, naphthylene, azulenylene, heptalenylene , Indacene, acenaphthylene, fluorenylene, spirofluorenylene, benzofluorenylene, dibenzofluorenylene, phenalenylene , phenanthrenylene, anthracenylene, fluoranthenylene, triphenylene, pyrenylene, pyrenylene Chrysenylene, naphthacene, picenylene, perylene, pyrrolene, thienylene, furylene, Imidazolylene, pyrazolylene, thiazolylene, isothiazolylene, oxazolylene, isooxazolylene, pyridinyl (pyridylene), pyrazinyl (pyrazinylene), pyrimidinyl (pyrimidinylene), pyridazinyl (pyridazinylene), isoindolyl (isoindolene), indolyl (indolylene), indazolylene ), isofuryl (purinylene), subquinolyl (quinolylene), isoquinolylene (isoquinolylene), benzoquinolylene (benzoquinolylene), subphthalazinyl (phthalazinylene), naphthalene diyl (naphthyridinylene) ), quinoxalinylene, quinazolinylene, cinnolinylene, carbazolylene, phenanthridinylene, acridinylene , phenanthrolinyl (phenanthrolinylene), phenazinyl (phenazinylene), benzimidazolylene (benzimidazolylene), benzofuranyl (benzofuranylene), benzothiophenylene (benzothiophenylene), benzothiazolyl ( benzothiazolylene), benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolylene, oxadiazolylene, Triazinyl (triazinylene), dibenzofuranylene (dibenzofuranylene), dibenzothiophenylene (dibenzothiophenylene), benzocarbazolylene, dibenzocarbazolylene, thiadiazolyl, imidazo Subpyridine pyridyl, imidazopyrimidinyl, cyclohexylene; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid radical or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, cyclopentadiene Base, indenyl, naphthyl, azulenyl, heptalenyl, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, Anthracenyl, fluoranthenyl, triphenylperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances selected from carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, and imidazopyrimidinyl:

Phenylene, cyclopentadienylene, indenylene, naphthyl, azulenylene, heptenylene, indacene, acenaphthenyl, fluorenyl, spirofluorenyl, benzofluorene Base, dibenzofluorenylene, phenalenylene, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, pyrene Base, naphthylenetetraphenylene, perylene, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazole Base, isoxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolyl, isofuryl, quinoline Base, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, linyl, carbazolyl, phenanthrenediyl, Acridylene, phenanthroline, phenazinyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzoxylidene Oxazolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuryl, dibenzothienyl, benzocarbazolylene, dibenzothylene Carbazolyl, thiadiazolylidene, imidazopyridinylene, imidazopyrimidinylene, cyclohexylene.

R ₉ to R ₁₆ can be independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl, -N(Q ₁₁ )(Q ₁₂ ); and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances of carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, and -N(Q ₃₁ )(Q ₃₂ ):

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

Wherein, said Q ₁ , Q ₂ , Q ₃₁ , and Q ₃₂ are independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl yl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and

C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl substituted by any one Phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl.

More specifically, Ar ₁ and Ar ₂ may be independently selected from the group represented by the following Chemical Formulas 4A to 4K.

L ₁ to L ₃ may be independently selected from the group represented by -N(Q _1a )- and the following Chemical Formulas 5A to 5G.

R ₉ to R ₁₆ may be independently selected from the group represented by the following Chemical Formulas 6A and 6B.

In said chemical formulas 4A to 4K, chemical formulas 5A to 5G, and chemical formulas 6A to 6B, Q _1a is selected from:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )( At least one of the following substances selected in Q ₃₅ ):

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group group, phenanthroline group, phenazine group, benzofluorenyl group, benzimidazole group, benzofurylidene group, benzothienylene group, benzothiazolyl group, benzoxazolylene group, isosubstance Oxazolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzocarbazole Base, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

Wherein, Z ₂₁ to Z ₂₅ , Z ₃₁ to Z ₃₄ and Z ₄₁ are independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )( Q ₃₅ ); and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )( At least one of the following substances selected in Q ₂₅ ):

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

Wherein, said Q ₃₁ to Q ₃₅ , Q ₂₁ to Q ₂₅ are independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl yl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracene Phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl substituted by any one of phenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl.

Optionally, a plurality of Z ₂₁ or Z ₂₂ in the chemical formula 4H are connected to each other to condense into a fluorenyl group.

In the chemical formulas 4A to 4K, chemical formulas 5A to 5G, and chemical formulas 6A to 6B,

p1, q1, and r1 independently take integers from 0 to 5.

p2, q2, and r2 independently take integers from 0 to 7.

p3 is an integer of 0 to 9.

p4 is an integer of 0 to 4.

p5 and q4 may independently take an integer of 0 to 3, and p3 may be an integer of 0 to 5.

"*" is the key position.

In the chemical formula 2, Ar ₁ and Ar ₂ may be independently selected from the group represented by the following chemical formulas 7A to 7BK, for example.

Wherein, L ₁ to L ₃ may be independently selected from the group represented by the following chemical formulas 8A to 8Q.

Wherein, R ₉ to R ₁₆ may be independently selected from the group represented by the following Chemical Formulas 9A to 9C.

For example, the first compound may be selected from the following compounds HTa-1 to HTa-698, but is not limited thereto.

The hole transport region includes a light emission assisting layer, and the light emission assisting layer may contain the first compound. The light emitting layer and the light emitting auxiliary layer may be adjacent to each other.

The thickness of the luminescence auxiliary layer can be to about. For example, when the light-emitting layer on the light-emitting auxiliary layer emits green light, the thickness of the light-emitting auxiliary layer may be to about. As another example, when the light-emitting layer on the light-emitting auxiliary layer emits red light, the thickness of the light-emitting auxiliary layer may be to about.

When the thickness of the luminescence-assisting layer satisfies the aforementioned range, a satisfactory level of hole transport characteristics can be obtained even without a substantial increase in driving voltage. When the thickness of the auxiliary layer satisfies the foregoing range, improved efficiency may be provided. When the thickness of the auxiliary layer satisfies the foregoing range, a roll-off phenomenon may be improved.

The hole transport region includes a luminescence auxiliary layer, and may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL) and an electron blocking layer (EBL).

A hole injection layer (HIL) may be formed on the first electrode 110 .

A hole transport layer (HTL) may be formed on the first electrode 110 or a hole injection layer (HIL).

The hole-transporting material used in the hole-transporting region such as the hole-injection layer (HIL) or the hole-transporting layer (HTL) can include at least one of the following materials, for example: phthalocyanine compounds such as copper phthalocyanine, DNTPD ( N,N'-diphenyl-N,N'-bis-[4-(phenyl-m-tolyl-amino)-phenyl]-biphenyl-4,4'-diamine, N,N '-Diphenyl-N,N'-bis-[4-(phenyl-m-tolyl-amino)-phenyl]-biphenyl-4,4'-diamine, m-MTDATA(4, 4',4"-tris(3-methylphenylamino)triphenylene, 4,4',4"-tris(3-methylphenyl)triphenylamine, TDATA, 2-TNATA, PANI/DBSA( polyaniline/dodecylbenzenesulfonic acid), polyaniline/dodecylbenzenesulfonic acid, PEDOT/PSS (poly(3,4-ethylenedioxythiophene)/poly(4-styrene), poly(3 ,4-methylenedioxythienyl)/poly(4-styrene sulfonate sodium)), PANI/CSA (polyaniline/camphorsulfonic acid) and PANI/PSS (polyaniline)/poly(4-styrene ), polyaniline/poly(sodium 4-styrenesulfonate), N-phenylcarbazolyl, polyalkenylcarbazolyl and other carbazolyl derivatives, TPD(N,N'-bis(3-methyl phenyl)-N,N'-diphenyl-[1,1-biphenyl]-4,4'-diamine), HMTPD(N,N,N',N'-tetrakis-(3-methyl phenyl)-3,3'-dimethylbenzidine), Spiro-TPD, TCTA (4,4',4"-tris(N-carbazolylene)triphenylamine (4,4', 4"-tris(N-carbazole)triphenylamine)), NPB(N,N'-bis(1-naphthyl)-N,N'-diphenylbenzidine (N,N'-bis(1- Naphthyl)-N,N'-diphenylbenzidine)), β-NPB, α-NPD, TAPC (di-[4-(N,N-xylyl-amino)-phenylcyclohexane) , a compound represented by the following Chemical Formula 201, and a compound represented by the following Chemical Formula 202.

<chemical formula 201>

<chemical formula 202>

In said chemical formulas 201 and 202,

L ₂₀₁ to L ₂₀₅ are independently selected from substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₃ -C ₁₀ ring Alkenylene, substituted or unsubstituted C ₁ -C ₁₀ heterocyclic alkenylene, substituted or unsubstituted C ₆ -C ₆₀ arylene, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene, substituted Or an unsubstituted divalent non-aromatic condensed polycyclic group, a substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic group.

Substituted C ₃ -C ₁₀ cycloalkenyl, Substituted C ₁ -C ₁₀ Heterocycloalkenyl, Substituted C ₃ -C ₁₀ Cycloalkenylene, Substituted C ₁ -C ₁₀ Heterocycloalkenyl group, substituted C ₆ -C ₆₀ arylene group, substituted C ₁ -C ₆₀ heteroarylene group, substituted 2-valent non-aromatic condensed polycyclic group, substituted 2-valent non-aromatic hetero At least one substituent of the condensed polycyclic group is selected from:

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C60 aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group, _{C 1 -C 60 alkyl , C _ _ 2} -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₂₁₁ )(Q ₂₁₂ ), -Si(Q ₂₁₃ )(Q ₂₁₄ )(Q ₂₁₅ ), -B(Q ₂₁₆ )(Q ₂₁₇ ) at least one of C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ ring Alkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C _1- C ₆₀ heteroaryl, monovalent Non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups; and

-N(Q ₂₂₁ )(Q ₂₂₂ ), -Si(Q ₂₂₃ )(Q ₂₂₄ )(Q ₂₂₅ ), -B(Q ₂₂₆ )(Q ₂₂₇ ).

Among them, xa1 to xa4 are independently selected from 0, 1, 2 and 3.

xa5 choose from 1, 2, 3, 4 and 5.

R ₂₀₁ to R ₂₀₅ are independently selected from:

C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C60 aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group, _{C 1 -C 60 alkyl , C _ _ 2} -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₂₄₁ )(Q ₂₄₂ ), -Si(Q ₂₄₃ )(Q ₂₄₄ )(Q ₂₄₅ ), -B(Q ₂₄₆ )(Q ₂₄₇ ) at least one of C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ ring Alkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C _1- C ₆₀ heteroaryl, monovalent A non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocondensed polycyclic group.

Q ₂₀₁ to Q ₂₀₇ , Q ₂₁₁ to Q ₂₁₇ , Q ₂₂₁ to Q ₂₂₇ , Q ₂₃₁ to Q ₂₃₇ and Q ₂₄₁ to Q ₂₄₇ are independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C60 aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group At least one of C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy;

C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, C ₃ -C ₁₀ cycloalkyl group, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C _1- C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group.

For example, in the chemical formulas 201 and 202, L ₂₀₁ to L ₂₀₅ are independently selected from:

Phenylene, naphthylene, fluorenylene, spirofluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrene, anthracenylene, pyrenylene, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri azinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolininyl, A phenylene group, a naphthylene group, a fluorenylene group, a spirofluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrylene group, an anthracenylene group, at least one of a carbazolyl group and a triazinylene group , pyrenylene, sub Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

Wherein, xa1 to xa4 take 0, 1 or 2 independently of each other.

xa5 is 1, 2 or 3.

R ₂₀₁ to R ₂₀₅ can be independently selected from: phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri azinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, azulenyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrene base, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl. However, it is not limited to this.

The compound represented by the chemical formula 201 may be represented by the following chemical formula 201A.

<Chemical formula 201A>

For example, the compound represented by the chemical formula 201 may be represented by the following chemical formula 201A-1, but is not limited thereto.

<Chemical formula 201A-1>

The compound represented by the chemical formula 202 may be represented by the following chemical formula 202A, but is not limited thereto.

<chemical formula 202A>

Wherein, for the description of L ₂₀₁ to L ₂₀₃ , xa1 to xa3, xa5 and R ₂₀₂ to R ₂₀₄ in the chemical formulas 201A, 201A-1 and 202A, please refer to the content recorded in this specification, and for the content of R ₂₁₁ and R ₂₁₂ , please refer to Instructions for R ₂₀₃ .

R ₂₁₃ to R ₂₁₇ can be independently from a hydrogen atom, a heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or Its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ Aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic heterocondensed polycyclic group.

For example, in the chemical formulas 201A, 201A-1 and 202A, L ₂₀₁ to L ₂₀₃ are independently selected from:

Phenylene, naphthylene, fluorenylene, spirofluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrene, anthracenylene, pyrenylene, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one phenylene group, naphthylene group, fluorenylene group, spirofluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrene group, anthracenylene group, pyrenylene group, Asia Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

xa1 to xa3 take 0 or 1 independently of each other.

R ₂₀₃ , R ₂₁₁ and R ₂₁₂ are independently selected from:

Phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri azinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenylene, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

R ₂₁₃ and R ₂₁₄ are independently selected from:

C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid Base or its salt, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group selected from the azinyl group;

Phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri azinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

R ₂₁₅ and R ₂₁₇ are independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate group or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid Base or its salt, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group selected from the azinyl group;

Phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridinylene, pyrazinylene, pyrimidinylene, pyridazinylene, quinolinylene, isoquinolinylene, quinoxalinylene, quinazolinylene, triazinylene; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracene base, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, group, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, quinolinylene, isoquinolinylene, quinoxalinylene, quinazolinylene, triazinylene.

xa5 is 1 or 2.

In the chemical formulas 201A and 201A-1, R ₂₁₃ and R ₂₁₄ may be bonded to each other to form a saturated or unsaturated ring.

For example, the hole transport region may further include a second compound represented by one of the Chemical Formulas 201A-1 and 202A.

In the chemical formulas 201A-1 and 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ can be independently substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₁ -C ₆₀ A heteroaryl group, a substituted monovalent non-aromatic condensed polycyclic group, and a substituted monovalent non-aromatic heterocondensed polycyclic group are selected.

L ₂₀₃ is a substituted or unsubstituted C ₆ -C ₆₀ arylene group.

xa3 and xa5 are independently selected from integers of 0 to 3.

R ₂₁₃ and R ₂₁₄ are independently selected from:

C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy, C ₁ -C ₂₀ aryl;

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy substituted by at least one of its salts; and

Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or At least one substituted C ₁ -C ₂₀ aryl selected from its salt, C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy, and C ₁ -C ₂₀ aryl.

Optionally, R ₂₁₃ and R ₂₁₄ can be connected to each other to form a condensed polycyclic ring.

R ₂₁₅ to R ₂₁₇ can be independently selected from:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenyl, substituted or unsubstituted C ₂ -C ₆₀ alkynyl, substituted or unsubstituted C ₁ - C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted Or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ).

Substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted C ₆ -C ₆₀ For the substituents of the arylene group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic heterocondensed polycyclic group, reference may be made to the contents described in the present specification.

According to another implementation example, in the chemical formulas 201A-1 and 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ are independently selected from the following group:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzo Oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinylene, dibenzofluorenyl, dibenzofurylene, dibenzothienylene, benzocarbylene Azolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances selected from carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, and imidazopyrimidinyl:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

Wherein, L ₂₀₃ is selected from the following groups:

Phenyl, cyclopentadienylene, indenylene, naphthylene, azulenylene, heptenylene, indacene, acenaphthenylene, fluorenylene, spirofluorenylene, benzo Fluorenylene, dibenzofluorenylene, phenalenylene, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, pyrene group, naphthylenetetraphenylene, perylene, perylene; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid radical or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, cyclopentadiene Base, indenyl, naphthyl, azulenyl, heptalenyl, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, Anthracenyl, fluoranthenyl, triphenylperylenyl, pyrenyl, At least one of the following substances in the group, naphthacenetetraphenyl group, perylenyl group and perylenyl group:

Phenylene, cyclopentadienylene, indenylene, naphthylene, azulene, heptenylene, indacene, naphthylene, fluorenyl, spirofluorenyl, benzoxene Fluorenyl, dibenzofluorenylene, fenalenyl, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, pyrene group, naphthylenetetraphenylene, perylene, perylene.

Wherein, R ₂₁₃ and R ₂₁₄ are independently selected from the following groups:

Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methyl Oxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, indacene, acenaphthyl, Fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenyl, perylene, perylene;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, At least one of the following substances in the group, naphthacenetetraphenyl group, perylenyl group and perylenyl group:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, base, naphthacenetetraphenyl, perylenyl, perylenyl.

Wherein, R ₂₁₅ to R ₂₁₇ are independently selected from the following groups:

Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances selected from carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, and imidazopyrimidinyl:

Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl.

As another implementation example, in the chemical formulas 201A-1 and 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ are independently selected from the following group: phenyl, biphenyl, naphthyl, fluorenyl , pyridinylene; phenyl and fluorenyl substituted by at least one of -F, -Cl, -Br, -I, methyl and cyano.

Among them, L ₂₀₃ phenylene.

R ₂₁₃ and R ₂₁₄ independently take a methyl group or a phenyl group, and selectively connect R ₂₁₃ and R ₂₁₄ to form a fluorenyl chain ring.

R ₂₁₅ to R ₂₁₇ may be hydrogen atoms, but are not limited thereto.

The second compound may be selected from the following compounds HTb-1 to HTb-20, but is not limited thereto.

In addition, the second compound represented by one of the Chemical Formulas 201A-1 and 202A may be used in the light emission assisting layer together with the first compound represented by the Chemical Formula 2.

When the first compound is used in the light emission auxiliary layer together with the second compound, the weight ratio of the first compound to the second compound may be in the range of 1:3 to 1:8. For example, the weight ratio between the first compound and the second compound may be 1:6, but is not limited thereto.

The thickness of the hole transport region is about to For example, approximately to If the hole-transporting region completely includes the hole-injection layer and the hole-transporting layer, the thickness of the hole-injection layer is about to eg about to And the thickness of the hole transport layer is about to eg about to When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer meet the aforementioned ranges, a satisfactory level of hole transport characteristics can be obtained without substantial increase in driving voltage.

The hole-transporting region contains substances as described above, and may further contain charge-generating substances to improve conductivity. The charge generating substance may be uniformly or nonuniformly dispersed in the hole transport region.

The charge-generating substance can be, for example, a p-dopant. Non-limiting examples of such p-dopants include: TCNQ (tetracyanoquinodialkylene; tetracyanoquinodimethane), F4-TCNQ (2,3,5,6-tetrafluoroethylene-tetracyano-1 , quinone derivatives such as 4-benzoquinone dialkylene); metal oxides such as tungsten oxide and molybdenum oxide; and the following compounds HATCN (1,4,5,8,9,11-hexanitrogen heterotriphenylene-hexacyanonitrile), etc., but not limited thereto.

The hole transport region includes the above-mentioned hole injection layer, hole transport layer, and luminescence auxiliary layer, and may further include at least one of a buffer layer and an electron blocking layer. The buffer layer is used to compensate the optical resonance distance based on the wavelength of the light emitted by the light emitting layer, so as to improve the light emission efficiency. As the substance contained in the buffer layer, a substance that can be contained in the hole transport region can be used. The electron blocking layer serves to prevent the injection of electrons from the electron transport region. For example, mCP may be used as the electron blocking layer material, but is not limited thereto.

The electron transport region may include at least one of a hole blocking layer (HBL), an electron transport layer (ETL), and an electron blocking layer (EBL), but is not limited thereto.

For example, the electron transport region may have a structure of electron transport layer/electron injection layer or hole blocking layer/electron transport layer/electron injection layer stacked in order from the light emitting layer, but is not limited thereto.

The hole blocking layer may include, for example, at least one of the following BCP, Bphen, and TmPyPB, but is not limited thereto.

The hole blocking layer has a thickness of about to For example it could be to about. If the thickness of the hole blocking layer satisfies the aforementioned range, excellent hole blocking characteristics can be obtained without substantially increasing the driving voltage.

The electron transport layer may also include at least one of the BCP, Bphen and the following Alq ₃ , BAlq, TAZ, NTAZ, but is not limited thereto.

Alternatively, the electron transport layer may include at least one of compounds represented by Chemical Formula 601 below.

<chemical formula 601>

Ar ₆₀₁ -[(L ₆₀₁ ) _xe1 -E ₆₀₁ ] _xe2

In said chemical formula 601, Ar ₆₀₁ is selected from:

Naphthalene, heptalene, fluorene, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalene, phenanthrene, anthracenyl ( anthracene), fluoranthene (fluoranthene), triphenylene (triphenylene), pyrene (pyrene), Chrysene, naphthacene, picene, perylene, pentaphene, indenoanthracene;

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₃ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₃ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C _{6 -C 60} aryl Thio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group, -Si(Q ₃₀₁ )(Q ₃₀₂ )(Q ₃₀₃ )( The Q ₃₀₁ to Q ₃₀₃ are independently selected from hydrogen atom, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₆ -C ₆₀ aryl, C ₂ -C ₆₀ heteroaryl) At least one of naphthyl, heptacene, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, base, naphthacene, perylenyl, perylenyl, penfenyl, indenanthracenyl.

For the content of L ₆₀₁ , refer to the description of L ₂₀₁ in this manual.

E ₆₀₁ selected from:

Pyrrolyl, thiophenyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl , oxazolyl, isooxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, iso Indolyl (isoindolyl), indolyl (indolyl), indazolyl (indazolyl), isofurinyl (purinyl), quinolyl (quinolyl), isoquinolyl (isoquinolyl), benzo Benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazole base (carbazolyl), phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzoimidazolyl, benzofurylidene (benzofuranyl), benzothiophenyl, isobenzothiazolyl, benzooxazolyl, isobenzoxazolyl, triazolyl ), tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarba Azolyl, dibenzocarbazolylene; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptenyl, indarenyl, Acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, Naphthacenetetraphenyl, Perylenyl, Perylenyl, Pentylphenyl, Hexenyl, Pentenyl, Rubyenyl, Pyrrolylene, Thienylene, Furylidene, Imidazolyl, Pyrazolylene , thiazolyl, isothiazolyl, oxazolylene, isoxazolylene, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, Indazolyl, isofuryl, quinolinyl, isoquinolinyl, benzoquinolinyl, subphthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinylene, line Base, carbazolyl, phenanthrene, acridinyl, phenanthroline, phenazinyl, benzimidazolyl, benzofurylidene, benzothienylene, isobenzothiazole Base, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinylene, dibenzofuryl, dibenzothiophene At least one of pyrrolene, thienylene, furyl, imidazole, pyrazolylene, thiazolyl, isothiazolylene of at least one of benzocarbazolylene and dibenzocarbazolylene , oxazolylene, isoxazolylene, pyridyl, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolyl, isofuryl , quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, lininyl, carbazolyl, sub Phenanthrenediyl, acridinyl, phenanthroline, phenazinyl, benzimidazolyl, benzofurylidene, benzothienylene, isobenzothiazolyl, benzoxazolylene , isobenzoxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuryl, dibenzothienylene, benzocarbazolylene , Dibenzocarbazolylene.

xe1 chooses from 0, 1, 2 and 3.

xe2 choose from 1, 2, 3 and 4.

Alternatively, the electron transport layer may include at least one of the compounds represented by the Chemical Formula 602.

<chemical formula 602>

In said chemical formula 602,

X ₆₁₁ is N or C-(L ₆₁₁ ) _xe611- R ₆₁₁ , X ₆₁₂ is N or C-(L ₆₁₂ ) _xe612- R ₆₁₂ , X ₆₁₃ is N or C-(L ₆₁₃ ) _xe613- R ₆₁₃ , X ₆₁₁ At least one of to X ₆₁₃ is N.

For the content of L ₆₁₁ to L ₆₁₆ , please refer to the description of L ₂₀₁ in this manual.

R ₆₁₁ to R ₆₁₆ are independently selected from:

Phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri azinyl; and

Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, naphthyl, azulenyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrene base, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri At least one of phenyl, naphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, pyrenyl, Base, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazolyl, tri Azinyl.

xe611 to xe616 are selected from 0, 1, 2, and 3 independently of each other.

The compound represented by the Chemical Formula 601 and the compound represented by the Chemical Formula 602 may include at least one of the following compounds ET1 to ET15.

The thickness of the electron transport layer is about to For example it could be to about. When the thickness of the electron transport layer satisfies the aforementioned range, a satisfactory degree of electron transport characteristics can be obtained without substantial increase in driving voltage.

Alternatively, the electron transport layer may include a metal-containing substance in addition to the compound.

The metal-containing species may include a Li complex. The Li complex may include, for example, the following compounds LiQ (lithium quinoline ester) or LiBTz (lithium [2-(2-hydroxyphenyl)benzothiazolyl]).

Also, the electron transport region may further include an electron injection layer (EIL) for facilitating injection of electrons from the second electrode 190 .

The electron injection layer may include, for example, at least one selected from LiF, NaCl, CsF, Li ₂ O, and BaO, but is not limited thereto.

The thickness of the electron injection layer can be to around, for example could be to about 90□. When the thickness of the electron injection layer satisfies the foregoing range, electron injection characteristics to a satisfactory degree can be obtained without substantial increase in driving voltage.

The layers or regions of the organic layer 150 can be vacuum deposited, spin-coated, molded, LB (Langmuir-Blodgett) method, inkjet printing method, laser printing method, laser thermal transfer method (Laser Induced Thermal Imaging, LITI)) and other various methods. method formed.

The organic layer 150 has a second electrode 190 on it. The second electrode 190 may be a negative electrode. The material for the second electrode 190 may use metals, alloys, conductive compounds and combinations thereof with relatively low work functions. As specific examples, lithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg- Ag) or the like is used as a substance for forming the second electrode 190 . Alternatively, in order to obtain a front surface, ITO or IZO can be used to form the transmissive second electrode 190 , and these variations can all be realized.

Above, the organic light emitting element has been described with reference to FIG. 1 , however, the present invention is not limited thereto.

In this specification, a C ₁ -C ₆₀ alkyl group represents a monovalent group of a chain or branched aliphatic hydrocarbon with a carbon number of 1 to 60, and specific examples include methyl, ethyl, and n-propyl , isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, hexyl, etc. In the present specification, the C ₁ -C ₆₀ alkenyl group represents a divalent group having the same structure as the C ₁ -C ₆₀ alkyl group.

In this specification, a C ₁ -C ₆₀ alkoxy group represents a monovalent group having the chemical formula -OA ₁₀₁ (wherein, A ₁₀₁ is the C ₁ -C ₆₀ alkyl group), and specific examples thereof include methoxy base, ethoxy, isopropoxy, etc.

In this specification, C ₂ -C ₆₀ alkenyl means a hydrocarbon group containing one or more carbon double bonds at the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include vinyl, propenyl, butene Base etc. In the present specification, the C ₂ -C ₆₀ alkenylene group represents a divalent group having the same structure as the C ₂ -C ₆₀ alkenyl group.

In this specification, C ₂ -C ₆₀ alkynyl means a hydrocarbon group containing more than one carbon triplet at the middle or end of the C ₂ -C ₆₀ alkyl group, specific examples include ethynyl, propynyl and the like. In the present specification, the C ₂ -C ₆₀ alkynylene group represents a divalent group having the same structure as the C ₂ -C ₆₀ alkynyl group.

In this specification, C ₃ -C ₁₀ cycloalkyl means a monovalent saturated hydrocarbon monocyclic group with a carbon number of 3 to 10, specific examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl Base etc. In the present specification, the C ₃ -C ₁₀ cycloalkylene group represents a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkyl group.

In this specification, C ₁ -C ₁₀ heterocycloalkyl means that the number of carbon atoms including at least one heteroatom selected from N, O, Si, P and S as chain-forming atoms is 1 to 10 Specific examples of monovalent monocyclic groups include tetrahydrofuryl, tetrahydroxythienylene, and the like. In the present specification, the C ₁ -C ₁₀ heterocycloalkylene group represents a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkyl group.

In this specification, C ₃ -C ₁₀ cycloalkenyl is a monovalent monocyclic group with 3 to 10 carbon atoms, which means a group that has at least one double bond in the chain and does not have aromaticity. Examples include cyclopentenyl, cyclohexenyl, cycloheptenyl and the like. In the present specification, the C ₃ -C ₁₀ cycloalkenylene group represents a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkenyl group.

In the present specification, the C ₁ -C ₁₀ heterocycloalkenyl group has 1 to 10 carbon atoms including at least one heteroatom selected from N, O, Si, P and S as a chain-forming atom. A 1-valent monocyclic group having at least one double bond within the chain ring. Specific examples of the C ₁ -C ₁₀ heterocycloalkenyl include 2,3-hydroxyfurylene, 2,3-hydroxythienylene and the like. In the present specification, the C ₁ -C ₁₀ heterocycloalkenylene group represents a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkenyl group.

In this specification, a C ₆ -C ₆₀ aryl group represents a monovalent group having a carbocyclic aromatic system with 6 to 60 carbon atoms, and a C ₆ -C ₆₀ arylene group represents a monovalent group with a carbon number of 6 to 60. Divalent group of carbocyclic aromatic system. Specific examples of the C ₆ -C ₆₀ aryl include phenyl, naphthyl, anthracenyl, phenanthrenyl, pyrenyl, Base etc. When the C ₆ -C ₆₀ aryl group and the C ₆ -C ₆₀ arylene group contain 2 or more chain rings, the 2 or more chain rings may be fused with each other.

In this specification, a C ₁ -C ₆₀ heteroaryl group represents a carbocyclic ring having 1 to 60 carbon atoms including at least one heteroatom selected from N, O, P, and S as a chain-forming atom. A monovalent group of an aromatic system, a C ₁ -C ₆₀ heteroarylene group means that at least one heteroatom selected from N, O, P, and S is used as a chain-forming atom, and the number of carbon atoms included is 1 to 60 divalent group of carbocyclic aromatic system. Specific examples of the C ₁ -C ₆₀ heteroaryl group include pyridinylene, pyrimidinylene, pyrazinylene, pyridazinylene, triazinylene, quinolinylene, isoquinolinylene and the like. When the C ₁ -C ₆₀ heteroaryl group and the C ₁ -C ₆₀ heteroarylene group contain 2 or more chains, the 2 or more chains may be fused with each other.

In this specification, the C ₆ -C ₆₀ aryloxy group represents -OA ₁₀₂ (wherein, A ₁₀₂ is the C ₆ -C ₆₀ aryl group), and the C ₆ -C ₆₀ arylthio group represents -SA ₁₀₃ (wherein , A ₁₀₃ is the C ₆ -C ₆₀ aryl).

In this specification, a monovalent non-aromatic condensed polycyclic group (non-aromaticcondensed polycyclic group) means that two or more chains are condensed with each other, and contain only carbon as chain-forming atoms, and the molecule as a whole has non-aromatic properties (non-aromatic). -aromacity) monovalent group. Specific examples of the monovalent non-aromatic condensed polycyclic group include fluorenyl and the like. In the present specification, the divalent non-aromatic condensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

In this specification, a monovalent non-aromatic condensed heteropolycyclic group (non-aromaticcondensedheteropolycyclic group) means that two or more chains are condensed with each other, and a heteroatom is selected from N, O, P, and S in addition to carbon as the chain. A monovalent group in which the forming atoms are included and the molecule as a whole has non-aromatic properties. The monovalent non-aromatic heterocondensed polycyclic group includes carbazolyl and the like. In the present specification, the divalent nonaromatic heterocondensed polycyclic group means a divalent group having the same structure as the monovalent nonaromatic heterocondensed polycyclic group.

Hereinafter, the organic light-emitting element according to the implementation examples of the present invention will be described more specifically by way of examples.

Example 1

The ITO/Ag/ITO glass substrates were ultrasonically cleaned with isopropanol and purified water for 5 minutes, then irradiated with ultraviolet rays for 30 minutes, and cleaned by exposing them to ozone to form a positive electrode on the substrate.

Vacuum deposition of m-MTDATA on top of the substrate formed a thickness of the vacuum implanted layer, and then followed by the NPB with A hole transport layer was formed by vacuum deposition to a thickness of . Next, compound HTa-14 was treated with A luminescence auxiliary layer is formed by depositing a thickness of .

On the top of the luminescence auxiliary layer, mCP (main agent) and PD-2 (dopant) are simultaneously deposited in a weight ratio of 90:10, thereby The thickness of the light-emitting layer is formed.

Alq3 and LiF are simultaneously deposited in a weight ratio of 1:1 on the top of the light-emitting layer to form a thickness of the electron transport layer. LiF was vacuum deposited on top of the electron transport layer to form a The thickness of the electron injection layer, and make MgAl (90:10 weight ratio) with (Negative electrode) thickness vacuum deposition to manufacture organic light-emitting elements.

Example 2 to Example 35

An organic light-emitting device was formed in the same manner as in Example 1 except that the compounds shown in Table 1 were used as the light-emitting auxiliary layer and dopant.

Example 36 to Example 39

In the formation of the luminescence auxiliary layer, the compounds in Table 1 were deposited at a weight ratio of 1:6, and the compounds in Table 1 were used as dopants, and an organic light emitting element.

Comparative Example 1 to Comparative Example 10

An organic light-emitting device was formed in the same manner as in Example 1 except that the compounds shown in Table 1 were used as the light-emitting auxiliary layer and dopant.

Table 1 shows the current efficiency, lifetime, and chromaticity of the organic light-emitting elements of Examples 1 to 39, and Comparative Examples 1 to 10. Current efficiency, lifetime, and chromaticity were evaluated using an IVL measurement device (PhotoResearch PR650, Keithley238). The current efficiency and lifetime in Table 1 are relative values with respect to the current efficiency and lifetime of Comparative Example 1. Chromaticity is represented by CIE1931 standard chromaticity coordinates. The organic light-emitting elements of Examples 1 to 39 and Comparative Examples 1 to 10 exhibited green light emitting characteristics.

[Table 1]

Example 40

The ITO/Ag/ITO glass substrates were ultrasonically cleaned with isopropanol and purified water for 5 minutes, then irradiated with ultraviolet rays for 30 minutes, and cleaned by exposing them to ozone to form a positive electrode on the substrate.

Vacuum deposition of m-MTDATA on top of the substrate formed a thickness of the hole injection layer, and then followed by The thickness of vacuum deposited NPB to form a hole transport layer. Next, compound HTa-14 was treated with A luminescence auxiliary layer is formed by depositing a thickness of .

On the top of the luminescence auxiliary layer, mCP (main agent) and PD-51 (dopant) are simultaneously deposited in a weight ratio of 90:10, thereby The thickness of the light-emitting layer is formed.

Alq3 and LiF are simultaneously deposited in a weight ratio of 1:1 on the top of the light-emitting layer to form a thickness of the electron transport layer. Vacuum deposited LiF on top of the electron transport layer to form a The thickness of the electron injection layer, and make MgAl (90:10 weight ratio) with (Negative electrode) is vacuum-deposited to produce an organic light-emitting element.

Example 41 to Example 51

An organic light-emitting device was formed in the same manner as in Example 36 except that the compounds shown in Table 2 were used as the light-emitting auxiliary layer and dopant.

Example 52 to Example 55

When forming the luminescence assisting layer, the compounds in Table 2 were deposited at a weight ratio of 1:6, and the compounds in Table 2 were used as dopants, and an organic layer was formed by the same method as in Example 40. light emitting element.

Comparative Example 11 to Comparative Example 18

An organic light-emitting device was formed in the same manner as in Example 31 except that the compounds shown in Table 2 were used as the light-emitting auxiliary layer and dopant.

Table 2 shows the current efficiency, lifetime, and chromaticity of the organic light-emitting elements of Examples 40 to 55, and Comparative Examples 11 to 18. Current efficiency, lifetime, and chromaticity were evaluated using an IVL measurement device (PhotoResearch PR650, Keithley238). The current efficiency and lifetime in Table 2 are relative values with respect to the current efficiency and lifetime of Comparative Example 10. The chromaticity is represented by the CIE1931 standard chromaticity coordinates. The organic light-emitting elements of Example 40 to Example 55, and Comparative Example 11 to Comparative Example 18 exhibit red light emitting characteristics.

[Table 2]

Luminescence auxiliary layer dopant efficiency life Chroma Example 40 HTa-14 PD-51 1.2 1.1 0.66/0.34 Example 41 HTa-14 PD-52 1.3 1 0.66/0.33 Example 42 HTa-22 PD-51 1.3 1.1 0.66/0.34 Example 43 HTa-22 PD-52 1.3 1 0.65/0.34 Example 44 HTa-204 PD-51 1.2 1.2 0.65/0.34 Example 45 HTa-204 PD-52 1.3 1.1 0.66/0.33 Example 46 HTa-509 PD-51 1.3 1.1 0.66/0.34 Example 47 HTa-509 PD-52 1.3 1.1 0.66/0.33 Example 48 HTa-79 PD-51 1.2 1.1 0.66/0.34 Example 49 HTa-79 PD-52 1.3 1.1 0.66/0.33 Example 50 HTa-14 PD-193 1.2 1.1 0.64/0.34 Example 51 HTa-14 PD-83 1.3 1 0.64/0.33

Example 52 HTa-14/HTb-1 PD-51 1.2 1.2 0.66/0.34 Example 53 HTa-14/HTb-1 PD-52 1.3 1.2 0.66/0.33 Example 54 HTa-14/HTb-1 PD-193 1.3 1.2 0.64/0.34 Example 55 HTa-14/HTb-1 PD-83 1.3 1.2 0.64/0.33 Comparative Example 11 NPB Compare PD-3 1 1 0.63/0.34 Comparative Example 12 NPB Compare PD-4 1 1.1 0.62/0.35 Comparative Example 13 HTa-14 Compare PD-3 1.1 1 0.63/0.34 Comparative Example 14 HTa-14 Compare PD-4 1.2 1 0.62/0.35 Comparative Example 15 HTa-22 Compare PD-3 1.2 1 0.63/0.34 Comparative Example 16 HTa-22 Compare PD-4 1.2 1.1 0.62/0.35 Comparative Example 17 NPB PD-51 1 1.1 0.66/0.34 Comparative Example 18 NPB PD-52 1 1 0.66/0.33

From the data in Table 1 and Table 2, it can be confirmed that the organic light-emitting elements of Examples are superior in current efficiency and lifetime compared with the organic light-emitting elements of Comparative Examples.

Claims (24)

1. An organic light-emitting element, comprising: first electrode; a second electrode opposite to the first electrode; a light emitting layer interposed between the first electrode and the second electrode; and a hole transport region interposed between the first electrode and the light-emitting layer, Wherein, the light emitting layer includes an organometallic compound represented by the following Chemical Formula 1, and the hole transport region contains a first compound represented by the following Chemical Formula 2, <chemical formula 1> M(L1) _n1 (L2) _n2 In said chemical formula 1, M is selected from Ir, Pt, Os, Ti, Zr, Hf, Eu, Tb, Tm and Rd, L1 is a ligand represented by the following chemical formula 1A, L2 is a ligand represented by the following chemical formula 1B, L1 and L2 are different from each other, n1 and n2 take 1 or 2 independently of each other, n1+n2=2 or n1+n2=3, when n1 is 2, two L1s are the same or different, when n2 is 2, two L2s are the same or different, In each chemical formula, CY ₁ and CY ₂ are independently selected from C ₅ -C ₆₀ ring groups and C ₂ -C ₆₀ heterocyclic groups, and CY ₁ and CY ₂ are connected to each other with a single bond, Y ₁ to Y ₄ independently take carbon or nitrogen, Y ₁ and Y ₂ are connected to each other by a single bond or a double bond, Y ₃ and Y ₄ are connected to each other by a single bond or a double bond, CY ₃ to CY ₆ are independently selected from C ₅ -C ₄₀ cyclic groups, C ₂ -C ₄₀ heterocyclic groups and the group shown in the chemical formula 2-1, In the chemical formula 2-1, A ₁ and A ₂ are independently selected from C ₅ -C ₂₀ cyclic groups and C ₂ -C ₂₀ heterocyclic groups, X ₁ is selected from N-(L ₃ ) _lb3 -Ar ₂ , oxygen atom, sulfur atom, C(R ₁₃ )(R ₁₄ ), Si(R ₁₅ )(R ₁₆ ), L ₁ to L ₃ are independently substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene, substituted or unsubstituted C ₆ -C ₆₀ arylene, substituted or unsubstituted C ₁ -C ₆₀ heteroalkylene Aryl, -N(Q _1a )-, substituted or unsubstituted 2-valent non-aromatic condensed polycyclic groups, substituted or unsubstituted 2-valent non-aromatic heterocondensed polycyclic groups, Ar ₁ and Ar ₂ are independently substituted or unsubstituted C ₆ -C ₆₀ aryl, or substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, R ₁ to R ₅ and R ₉ to R ₁₆ are independently selected from a hydrogen atom, a heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, Hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenyl, substituted or unsubstituted Substituted C ₂ -C ₆₀ alkynyl, substituted or unsubstituted C ₁ -C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycle Alkyl, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ) and -B(Q ₆ )(Q ₇ ), R ₆ to R ₈ are independently selected from C ₁ -C ₁₀ alkyl groups and C ₁ -C ₁₀ alkyl groups substituted by at least one of the following groups: heavy hydrogen atom, -F, -Cl, -Br , -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, Among them, substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted C ₃ - C ₁₀ cycloalkylene, substituted C ₆ -C ₆₀ arylene, substituted C ₁ -C ₆₀ heteroarylene, substituted monovalent non-aromatic condensed polycyclic group, substituted 1 At least one of the substituents of the valent non-aromatic heterocondensed polycyclic group, the substituted divalent non-aromatic condensed polycyclic group, and the substituted divalent non-aromatic heterocondensed polycyclic group is selected from the following group Choose from: Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C _{6 0} aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group C ₁ -C ₆₀ alkane of at least one of group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ) and -B(Q ₁₆ )(Q ₁₇ ) Base, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl and C ₁ -C ₆₀ alkoxy; C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q21)(Q22), -Si(Q23)(Q24 )(Q25), -B(Q26)(Q27) at least one of C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ - C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group; and -N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), Wherein, said Q ₁ to Q ₇ , Q ₁₁ to Q ₁₇ , Q ₂₁ to Q ₂₇ , Q ₃₁ to Q ₃₇ are independently selected from hydrogen, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl , cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salts, sulfonic acid or its salts, phosphoric acid or its salts, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenes C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ - C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1-valent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, Said Q _1a is selected from substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, a ₁ and a ₂ are independently selected from integers from 0 to 5, a ₃ choose from integers from 0 to 2, a ₄ , b ₁ to b ₅ , and lb ₁ to lb ₃ are independently selected from the integers of 0 to 4. When a ₄ is selected to be 2 or more, multiple R ₅ can be condensed on the connected benzene ring to form a condensed ring, nb ₁ is 0 or 1, nb ₂ chooses from integers from 0 to 2, When one or more of a ₁ to a ₄ is 2 or more, R ₁ , R ₂ , R ₄ or R ₅ of 2 or more among R ₁ , R ₂ , R ₄ , and R ₅ are the same or different, When one or more of b ₁ to b ₅ is 2 or more, among Ar ₁ and R ₉ to R ₁₂ , Ar ₁ or R ₉ to R ₁₂ of 2 or more are the same or different, When one or more of lb ₁ to lb ₃ is 2 or more, L ₁ to L ₃ of 2 or more among L ₁ to L ₃ are the same or different, Wherein, "*" and "*'" are the bonds between the chemical formula 1 and M. 2. The organic light emitting element according to claim 1, wherein, in the chemical formula 1, M is Os, Ir or Pt. 3. The organic light emitting device according to claim 1, wherein, in the chemical formula 1, M is Ir. 4. The organic light-emitting device according to claim 1, wherein, in the chemical formula 1, n1 and n2 are independently 1 or 2, and n1+n2=3. 5. The organic light emitting element according to claim 1, wherein, in the chemical _formula 1A, _Y1 is N, and _Y2 to Y4 are C. 6. The organic light-emitting element according to claim 1, wherein, in the chemical formula 1A, CY ₁ and CY ₂ are independently selected from phenyl, naphthyl, fluorenyl, spirofluorenyl, indolyl, indenyl , furyl, thienyl, carbazolyl, benzofuryl, benzothienyl, dibenzofuryl, dibenzothienyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, Oxazolyl, isoxazolyl, triazolyl, pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, quinolinyl, triazinyl, isoquinolyl, benzoquinolyl, quinoxalinyl , quinazolinyl, naphthyridinyl, benzimidazolyl, benzoxazolyl, isobenzoxazolyl, oxadiazolyl. 7. The organic light-emitting element according to claim 1, wherein, in the chemical formula _1A , CY is selected from pyrrolyl, imidazolyl, triazolyl, oxadiazolyl, pyridyl, pyrimidinyl, pyrazinyl, Choose from quinolinyl, isoquinolinyl, triazinyl. 8. The organic light-emitting element according to claim 1, wherein, in the chemical formula 1A, CY ₂ is selected from phenyl, naphthyl, furyl, thienyl, pyridyl, pyrimidyl, pyrazinyl, triazinyl , fluorenyl, carbazolyl, indole, oxadiazolyl, benzofuryl, benzothienyl, dibenzofuryl, dibenzothienyl. 9. The organic light-emitting element according to claim 1, wherein, in the chemical formula 1A, CY ₁ is selected from pyridyl, pyrimidyl, triazinyl, quinolinyl, isoquinolyl, oxadiazolyl, tri Azolyl, imidazolyl, CY ₂ from phenyl, pyridyl, pyrimidinyl, dibenzofuryl, dibenzothienyl, thienyl, benzothienyl, furyl, benzofuryl, indole Select from base, carbazolyl. 10. The organic light-emitting element according to claim 1, wherein, in the chemical formula 1A and the chemical formula 1B, R ₁ to R ₅ are independently selected from the following group: Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthacenetetraphenyl, perylenyl, perylenyl, phenoxy; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salts, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, diphenyl And fluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, At least one of the following substances: phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacenenyl, acenaphthyl Base, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenyl, perylenyl, perylenyl, phenoxy, Wherein, R ₆ to R ₈ are selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, and R ₆ to R ₈ are the same. 11. The organic light-emitting element according to claim 1, wherein the organometallic compound represented by the chemical formula 1 is selected from the following compounds PD-1 to PD-193: 12. The organic light-emitting element as claimed in claim 1, wherein, in the chemical formula 2, the P moiety Represented by one of the following chemical formulas P1 to P26, the Q moiety represented by one of the following chemical formulas P1 to P26 and Q1 to Q13: , in each formula, Z ₁₁ to Z ₁₄ are independently selected from hydrogen atom, C ₁ -C ₁₀ alkyl group and C ₆ -C ₂₀ aryl group, "*" is L ₁ , L ₃ or substituent group keys. 13. The organic light-emitting element according to claim 1, wherein, in the chemical formula 2, Ar ₁ and Ar ₂ are independently selected from the following group: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazole, benzofuryl, benzothienyl, benzothiazolyl, benzoxazolylene, isobenzoxylidene Oxazolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzocarbazole , dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, trityl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl , sec-pentyl, tert-pentyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptacene Base, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )( Q ₂₅ ) at least one of the following substances: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, Wherein, said Q ₂₁ to Q ₂₅ are independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracenyl , pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthryl phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl, Wherein, L ₁ to L ₃ are independently selected from the following groups: Phenylene, pentalenylene, indenylene, naphthylene, azulenylene, heptenylene, indacene, acenaphthylene, fluorenylene, spirofluorenylene, benzene And fluorenylene, dibenzofluorenylene, phenalenylene, phenanthrenylene, anthracene, fluoranthene, benzo[9,10]phenanthrenylene, pyrenylene, base, tetraphenylene, perylene, perylene, pyrrolylene, thienylene, furyl, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene , isoxazolylene, pyrenylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolyl, furyl, quinolinylene, Isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, linyl, carbazolyl, phenanthrene, acryl Pyridine, phenanthroline, phenazinylene, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzoxazinyl Azolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuryl, dibenzothienyl, benzocarbazolylene, dibenzothylene Carbazolyl, thiadiazolylidene, imidazopyridylidene, imidazopyrimidinylidene, cyclohexylene; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid radical or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, cyclopentadiene Base, indenyl, naphthyl, azulenyl, heptalenyl, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, Anthracenyl, fluoranthenyl, triphenylperylenyl, pyrenyl, Base, Naphthalene Tetraphenylene, Perenyl, Phenylalkylene, Pyrrolylene, Thienylene, Furylidene, Imidazolyl, Pyrazolylene, Thiazolylene, Isothiazolylene, Oxazole Base, isoxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolyl, isofuryl, quinoline Base, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, linyl, carbazolyl, phenanthrenediyl, Acridylene, phenanthroline, phenazinyl, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzooxazolylene , isobenzoxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinylene, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, At least one of the following substances selected from benzocarbazolylene, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, and imidazopyrimidinyl: Phenylene, cyclopentadienylene, indenylene, naphthylene, azulenylene, heptenylene, indacene, acenaphthylene, fluorenylene, spirofluorenylene, benzene And fluorenylene, dibenzofluorenylene, phenalenylene, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, Base, naphthylenetetraphenylene, perylene, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazole Base, isoxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolyl, isofuryl, quinoline Base, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthalenediyl, quinoxalinyl, quinazolinyl, linyl, carbazolyl, phenanthrenediyl, Acridylene, phenanthroline, phenazinyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzoxylidene Oxazolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuryl, dibenzothienyl, benzocarbazolylene, dibenzothylene Carbazolyl, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl, cyclohexyl, Wherein, R ₉ to R ₁₆ are independently selected from the following groups: Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl, -N(Q ₁₁ )(Q ₁₂ ); and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, and at least one of the following substances of -N(Q ₂₁ )(Q ₂₂ ): Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, Wherein, said Q ₁ , Q ₂ , Q ₃₁ , and Q ₃₂ are independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl yl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracene Phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl substituted by any one of phenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl. 14. The organic light-emitting element according to claim 1, wherein, in the chemical formula 2, Ar ₁ and Ar ₂ are independently selected from the group represented by the following chemical formula 4A to chemical formula 4K: Wherein, L ₁ to L ₄ are selected from the group represented by -N(Q _1a )- and the following chemical formula 5A to chemical formula 5G: Wherein, R ₉ to R ₁₆ are independently selected from the group represented by the following chemical formula 6A and chemical formula 6B: In each formula, Q _1a is selected from the following groups: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )( At least one of the following substances selected in Q ₃₅ ): Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group group, phenanthroline group, phenazine group, benzofluorenyl group, benzimidazole group, benzofurylidene group, benzothienylene group, benzothiazolyl group, benzoxazolylene group, isosubstance Oxazolyl, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzocarbazole Base, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, Wherein, Z ₂₁ to Z ₂₅ , Z ₃₁ to Z ₃₄ and Z ₄₁ are independently selected from the following group: hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, Nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl Base, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy , phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, Phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q _{3 1} )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ ) (Q ₃₅ ); and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )( At least one of the following substances selected in Q ₂₅ ): Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, Wherein, said Q ₃₁ to Q ₃₅ , Q ₂₁ to Q ₂₅ are independently selected from the following group: hydrogen atom, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl yl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl; and C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, naphthyl, anthracene phenyl, biphenyl, naphthyl, anthracenyl, pyrenyl, phenanthrenyl, triperylenyl, fluorenyl, Wherein, a plurality of Z ₂₁ or Z ₂₂ in the chemical formula 4H are selectively connected to each other to condense on the fluorenyl group, p1, q1 and r1 independently take an integer from 0 to 5, p2, q2 and r2 independently take an integer from 0 to 7, p3 is an integer from 0 to 9, p4 is an integer from 0 to 4, p5 and q3 independently take an integer from 0 to 3, "*" is the key position. 15. The organic light-emitting element according to claim 1, wherein, in the chemical formula 2, Ar ₁ and Ar ₂ are independently selected from the group represented by the following chemical formula 7A to chemical formula 7BK: Wherein, L ₁ to L ₃ are independently selected from the group represented by the following chemical formula 8A to chemical formula 8Q: Wherein, R ₉ to R ₁₆ are independently selected from the group represented by the following chemical formula 9A to chemical formula 9C: In each chemical formula, "*" is a bond position. 16. The organic light-emitting element according to claim 1, wherein the first compound is selected from the following compounds HTa-1 to HTa-698: 17. The organic light emitting element according to claim 1, wherein the hole transport region further comprises a second compound represented by one of the following Chemical Formula 201A-1 and Chemical Formula 202A: In said chemical formula 201A-1 and chemical formula 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ are independently selected from the following group: substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted Monovalent non-aromatic condensed polycyclic groups, substituted monovalent non-aromatic heterocondensed polycyclic groups, L ₂₀₃ is a substituted or unsubstituted C ₆ -C ₆₀ arylene group, xa3 and xa5 are independently selected from integers from 0 to 3, R ₂₁₃ and R ₂₁₄ are independently selected from the following group: C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy, C ₁ -C ₂₀ aryl; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid C ₁ -C ₁₀ alkyl and C ₁ -C ₁₀ alkoxy selected from at least one group or a salt thereof; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid C 1 -C ₂₀ aryl group selected from C ₁ -C 10 alkyl group, C ₁ -C ₁₀ alkoxy group, C ₁ -C ₂₀ aryl group or its salt, C ₁ -C ₁₀ alkyl group, Wherein, selectively connecting R ₂₁₃ and R ₂₁₄ to each other to form a condensed polycyclic ring, Wherein, R ₂₁₅ to R ₂₁₇ are independently selected from the following groups: Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, substituted or unsubstituted C ₁ -C ₆₀ alkyl, substituted or unsubstituted C ₂ -C ₆₀ alkenyl, substituted or unsubstituted C ₂ -C ₆₀ alkynyl, substituted or unsubstituted C ₁ - C ₆₀ alkoxy, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl, substituted Or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl, substituted or unsubstituted C ₆ -C ₆₀ aryl, substituted or unsubstituted C ₆ -C ₆₀ aryloxy, substituted or unsubstituted C ₆ -C ₆₀ arylthio, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), Substituted C ₁ -C ₆₀ alkyl, substituted C ₂ -C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl, substituted C ₃ -C ₁₀ cycloalkenyl, substituted C ₁ -C ₁₀ heterocycloalkenyl, substituted C ₆ -C ₆₀ aryl, substituted C ₆ -C ₆₀ aryloxy, substituted C ₆ -C ₆₀ arylthio, substituted C ₁ -C ₆₀ heteroaryl, substituted C ₆ -C ₆₀ At least one of the substituents of the arylene group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic heterocondensed polycyclic group is selected from the following group: Heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazino group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or Its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl , C ₆ -C60 aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group, _{C 1 -C 60 alkyl , C _ _ 2} -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy; C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C _{6 0} aryl, C ₆ - C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, 1-valent non-aromatic condensed polycyclic group, 1-valent non-aromatic heterocondensed polycyclic group; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid group or its salt, C ₁ -C ₆₀ alkyl, C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ - C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylsulfide group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ ring of at least one of )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ) Alkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C _1- C ₆₀ heteroaryl, monovalent Non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups; and -N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), Wherein, the Q ₁ to Q ₇ , Q ₁₁ to Q ₁₇ , Q ₂₁ to Q ₂₇ , and Q ₃₁ to Q ₃₇ are independently selected from the following group: hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C ₁ -C ₆₀ alkyl , C ₂ -C ₆₀ alkenyl, C ₂ -C ₆₀ alkynyl, C ₁ -C ₆₀ alkoxy, C ₃ -C ₁₀ cycloalkyl, C ₁ -C ₁₀ heterocycloalkyl, C ₃ -C ₁₀ Cycloalkenyl, C ₁ -C ₁₀ heterocycloalkenyl, C ₆ -C ₆₀ aryl, C ₆ -C ₆₀ aryloxy, C ₆ -C ₆₀ arylthio, C ₁ -C ₆₀ heteroaryl, 1 A valent non-aromatic condensed polycyclic group, a monovalent non-aromatic heterocondensed polycyclic group. 18. The organic light-emitting element according to claim 17, wherein, in the chemical formulas 201A-1 and 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ are independently selected from the following group: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzo Oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinylene, dibenzofluorenyl, dibenzofurylene, dibenzothienylene, benzocarbylene Azolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances selected from carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, and imidazopyrimidinyl: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, Wherein, L ₂₀₃ is selected from the following groups: Phenyl, cyclopentadienylene, indenylene, naphthylene, azulenylene, heptenylene, indacene, acenaphthenylene, fluorenylene, spirofluorenylene, benzo Fluorenylene, dibenzofluorenylene, phenalenylene, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, pyrene group, naphthylenetetraphenylene, perylene, perylene; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid radical or its salt, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, cyclopentadiene Base, indenyl, naphthyl, azulenyl, heptalenyl, indacenenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, Anthracenyl, fluoranthenyl, triphenylperylenyl, pyrenyl, At least one of the following substances in the group, naphthacenetetraphenyl group, perylenyl group and perylenyl group: Phenylene, cyclopentadienylene, indenylene, naphthylene, azulene, heptenylene, indacene, naphthylene, fluorenyl, spirofluorenyl, benzoxene Fluorenyl, dibenzofluorenylene, fenalenyl, phenanthrenylene, anthracene, fluoranthene, triperylene, pyrenylene, pyrene group, naphthylenetetraphenylene, perylene, perylene, Wherein, R ₂₁₃ and R ₂₁₄ are independently selected from the following groups: Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methyl Oxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, indacene, acenaphthyl, Fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenyl, perylene, perylene; Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, At least one of the following substances in the group, naphthacenetetraphenyl group, perylenyl group and perylenyl group: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, base, naphthotetraphenyl, perylenyl, perylenyl, Wherein, R ₂₁₅ to R ₂₁₇ are independently selected from the following groups: Hydrogen atom, heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, Phosphate or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl , tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptyl, inda Provincial, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl; and Substituted with heavy hydrogen atom, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidino, hydrazino, hydrazone, carboxyl or its salt, sulfonic acid or its salt, phosphoric acid base or its salt, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-amyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptatenyl, indacene Base, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo At least one of the following substances selected from carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, and imidazopyrimidinyl: Phenyl, cyclopentadienyl, indenyl, naphthyl, azulenyl, heptalenyl, indarenyl, acenaphthyl, fluorenyl, spirofluorenyl, benzofluorenyl, dibenzofluorenyl, non Naenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triperylenyl, pyrenyl, Base, naphthotetraphenylene, perylenyl, perylene, pyrrolylene, thienylene, furylylene, imidazolyl, pyrazolylene, thiazolyl, isothiazolylene, oxazolylene, isothiazolyl Oxazolylene, pyridylene, pyrazinylene, pyrimidinylene, pyridazinylene, isoindolylene, indolylene, indazolylene, isofuryl, quinolinylene, iso Quinoline group, benzoquinoline group, subphthalazinyl group, naphthalene diyl group, quinoxaline group, quinazoline group, linen group, carbazolyl group, phenanthrene group, acridine group Base, phenanthroline, phenazine, benzofluorenyl, benzimidazolyl, benzofurylidene, benzothienylene, benzothiazolyl, benzoxazolylene, isobenzene And oxazolylene, triazolylene, tetrazolyl, oxadiazolyl, triazinyl, dibenzofluorenyl, dibenzofuryl, dibenzothienylene, benzo Carbazolyl, dibenzocarbazolylene, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl. 19. The organic light-emitting element according to claim 17, wherein, in the chemical formula 201A-1 and the chemical formula 202A, R ₂₀₂ to R ₂₀₄ , R ₂₁₁ to R ₂₁₂ are independently selected from the following group: phenyl, biphenyl, naphthyl, fluorenyl, pyridinyl; -F, -Cl, -Br, -I phenyl, fluorenyl substituted by at least one of methyl, cyano, Among them, L ₂₀₃ phenylene, R ₂₁₃ and R ₂₁₄ independently take a methyl group or a phenyl group, and selectively connect R ₂₁₃ and R ₂₁₄ to form a fluorenyl chain ring, R ₂₁₅ to R ₂₁₇ are hydrogen atoms. 20. The organic light-emitting element according to claim 17, wherein the second compound is selected from the following compounds HTb-1 to HTb-20: 21. The organic light emitting element according to claim 1, wherein the hole transport region comprises a light emission assisting layer comprising the first compound. 22. The organic light emitting device according to claim 21, wherein the light emission assisting layer further comprises the second compound. 23. The organic light emitting element according to claim 21, wherein the light emitting layer is adjacent to the light emitting auxiliary layer. 24. The organic light emitting element according to claim 17, wherein the hole transport region further comprises a hole transport layer comprising the second compound.