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WO2014128648A1 - Concentrateur solaire luminescent comprenant des composés naphthothiadiazole disubstitués - Google Patents

Concentrateur solaire luminescent comprenant des composés naphthothiadiazole disubstitués Download PDF

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Publication number
WO2014128648A1
WO2014128648A1 PCT/IB2014/059135 IB2014059135W WO2014128648A1 WO 2014128648 A1 WO2014128648 A1 WO 2014128648A1 IB 2014059135 W IB2014059135 W IB 2014059135W WO 2014128648 A1 WO2014128648 A1 WO 2014128648A1
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carbon atoms
bound
optionally
heteroatoms
saturated
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Andrea Alessi
Samuele Santarelli
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Eni SpA
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Eni SpA
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
    • H10F77/45—Wavelength conversion means, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
    • C09K2211/1051—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms with sulfur
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Definitions

  • the present invention relates to a luminescent solar concentrator (LSC) comprising at least one disubstituted naphthothiadiazole compound.
  • LSC luminescent solar concentrator
  • the present invention also relates to the use of at least one disubstituted naphthothiadiazole compound in the construction of luminescent solar concentrators (LSCs) .
  • LSCs luminescent solar concentrators
  • the present invention also relates to a photovoltaic device (or solar device) selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports, comprising a luminescent solar concentrator (LSC) including at least one disubstituted naphthothiadiazole compound.
  • a photovoltaic device selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports, comprising a luminescent solar concentrator (LSC) including at least one disubstituted naphthothiadiazole compound.
  • LSC luminescent solar concentrator
  • single-junction photovoltaic cells or solar cells are not capable of efficiently exploiting all solar radiation. Their efficiency, in fact, is maximum only within a certain spectrum range which comprises a part of visible radiation and a part of infrared radiation.
  • Spectrum converter materials which can capture solar radiation outside the optimal spectral range and convert it to effective radiation, can be used for enhancing the performance of photovoltaic cells (or solar cells) .
  • luminescent solar concentrators LSCs
  • LSCs luminescent solar concentrators
  • Said luminescent solar concentrators generally consist of large sheets of material transparent to solar radiation, in which fluorescent substances are dispersed or chemically bound to said material, which act as spectrum converters. Due to the effect of the optical phenomenon of total reflection, the radiation emitted by the fluorescent molecules is "guided" towards the thin edges of the sheet wherein it is concentrated on photovoltaic cells (or solar cells) positioned therein. In this way, large surfaces of low- cost materials (photoluminescent sheets) can be used for concentrating the light on small surfaces of high- cost materials [photovoltaic cells (or solar cells) ] .
  • a fluorescent compound should have numerous characteristics for being advantageously used in the construction of luminescent solar concentrators (LSCs) and these are not always compatible with each other.
  • the frequency of the radiation emitted by fluorescence must correspond to an energy higher than the threshold value below which the semiconductor, representing the core of the photovoltaic cell, is no longer able to function.
  • the absorption spectrum of the fluorescent compound should be as extensive as possible, so as to absorb most of the inciding solar radiation and then re-emit it at the desired frequency.
  • the absorption of the solar radiation be extremely intense, so that the fluorescent compound can exert its function at the lowest possible concentrations, avoiding the use of large quantities.
  • the absorption process of solar radiation and its subsequent re-emission at lower frequencies must take place with the highest possible efficiency, minimizing the so-called non-radiative losses, often collectively indicated with the term "thermalization” : the efficiency of the process is measured by its quantic yield.
  • the absorption and the emission frequencies must be as different as possible, as otherwise the radiation emitted by a molecule of the fluorescent compound would be absorbed, and at least partially diffused, by the adjacent molecules. Said phenomenon, generally called self-absorption, inevitably leads to a significant loss in efficiency.
  • the difference between the frequencies of the peak with the lower frequency of the absorption spectrum and of the peak of the radiation emitted, is normally indicated as Stokes shift and measured in nm (i.e. it is not the difference between the two frequencies that is measured, but the difference between the two wavelengths which correspond to them) .
  • benzothiadiazole compounds in particular 4 , 7-di- ( thien-2 ' -yl ) -2 , 1 , 3-benzothia- diazole (DTB) , are fluorescent compounds which can be used in the construction of luminescent solar concentrators (LSCs) .
  • LSCs luminescent solar concentrators
  • DTB 7-di- (thien-2 '-yl) -2,1, 3-benzothiadiazole
  • DTB is characterized by an emission centred around 579 nm, which corresponds to an energy well above the minimum threshold value for the functioning of photovoltaic cells (or solar cells), said threshold corresponding, for example, to a wavelength of about 1100 nm for the most widely-used photovoltaic cells (or solar cells), based on silicon.
  • its absorption of light radiation is intense and extends over a relatively wide range of wavelengths, indicatively ranging from 550 nm (green radiation wavelength) to ultraviolet.
  • disubstituted naphthothiadiazole compounds having a specific general formula can be advantageously used in the construction of luminescent solar concentrators (LSCs) .
  • Said luminescent solar concentrators (LSCs) can be advantageously used in the construction of photovoltaic devices (or solar devices) such as, for example, photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports.
  • Said disubstituted naphthothiadiazole compounds in fact, have an absorption spectrum which extends much more towards red with respect to known benzothiadiazole compounds.
  • said disubstituted naphthothiadiazole compounds have higher Stokes shifts than those of the known benzothiadiazole compounds .
  • An object of the present invention therefore relates to a luminescent solar concentrator (LSC) comprising at least one disubstituted naphthothiadiazole compound having general formula (I) :
  • Ri, R2, R3, R4, R5, R6 and R 7 equal to or different from each other, represent a hydrogen atom; or they are selected from linear or branched Ci-C20 f preferably C1-C10, alkyl groups, optionally containing heteroatoms, cycloalkyl groups optionally substituted, aryl groups optionally substituted, linear or branched Ci-C20 f preferably C1-C10, alkoxyl groups, optionally substituted;
  • Ri and R2 can be optionally bound to each other so as to form, together with the carbon atoms to which they are bound, a cycle or a polycyclic system containing from 3 to 14 carbon atoms, preferably from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally containing one or more heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium;
  • R 2 and R3 can be optionally bound to each other so as to form, together with the carbon atoms to which they are bound, a cycle or a polycyclic system containing from 3 to 14 carbon atoms, preferably from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally containing one or more heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium;
  • Ri and R 4 can be optionally bound to each other so as to form, together with the carbon atoms to which they are bound, a cycle or a polycyclic system containing from 3 to 14 carbon atoms, preferably from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally containing one or more heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium;
  • R 5 and ]3 ⁇ 4 can be optionally bound to each other so as to form, together with the carbon atoms to which they are bound, a cycle or a polycyclic system containing from 3 to 14 carbon atoms, preferably from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally containing one or more heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium;
  • R6 and R 7f can be optionally bound to each other so as to form, together with the carbon atoms to which they are bound, a cycle or a polycyclic system containing from 3 to 14 carbon atoms, preferably from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally containing one or more heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium.
  • the substituents Ri, R 2 , R3, R4, R5, R6 and R 7 represent a hydrogen atom.
  • a particularly preferred aspect of the present invention therefore relates to a luminescent solar concentrator (LSC) comprising 4 , 9-bis- ( thien-2 ' -yl ) - naphtho [ 2 , 3-c] [ 1 , 2 , 5 ] -thiadiazole (DTN) having formula (la)
  • the naphthothiadiazole compound having general formula (I) has an absorption which, with respect to that of 4 , 7-di- ( thien-2 ' -yl ) -2 , 1 , 3- benzothiadiazole (DTB) , extends much more towards red: said absorption is intense and extensive over a relatively wide wavelengths range which, for example, for 4 , 9-bis- ( thien-2 ' -yl ) -naphtho [ 2 , 3-c ] [ 1 , 2 , 5 ] -thia- diazole (DTN) having formula (la) ranges, from 200 nm to 600 nm.
  • said compound having general formula (I) has a particularly high Stokes shift.
  • 4,9- bis- (thien-2 '-yl) -naphtho [2, 3-c] [1,2,5] -thiadiazole (DTN) having formula (la) has a Stokes shift, in dichloromethane solution, equal to 202 nm : therefore a Stokes shift higher than that, already high, of 4 , 7-di- ( thien-2 ' -yl ) -2 , 1 , 3-benzothiadiazole (DTB) equal to 134 nm (measured under the same conditions ) .
  • C1-C2 0 alkyl groups refers to linear or branched alkyl groups having from 1 to 20 carbon atoms. Specific examples of C1 -C2 0 alkyl groups are: methyl, ethyl, ⁇ -propyl, iso-propyl, n-butyl, iso-butyl, t- butyl, pentyl, ethyl-hexyl, hexyl, heptyl, octyl, nonyl, decyl, dodecyl .
  • C 1 -C2 0 alkyl groups optionally containing heteroatoms refers to linear or branched alkyl groups having from 1 to 20 carbon atoms, saturated or unsaturated, wherein at least one of the hydrogen atoms is substituted with a heteroatom selected from: halogens such as, for example, fluorine, chlorine, preferably fluorine; nitrogen; sulfur; oxygen.
  • C1 -C2 0 alkyl groups optionally containing heteroatoms are: fluoromethyl, difluoromethyl, trifluoromethyl , trichloromethyl , 2 , 2 , 2-trifluoroethyl , 2,2, 2-trichloroethyl, 2,2,3, 3-tetrafluoropropyl,
  • cycloalkyl groups refers to cycloalkyl groups having from 3 to 10 carbon atoms. Said cycloalkyl groups can be optionally substituted with one or more groups, equal to or different from each other, selected from: halogen atoms such as, for example, fluorine, chlorine, preferably fluorine; hydroxyl groups; C 1 -C2 0 alkyl groups; C 1 -C2 0 alkoxyl groups; cyano groups; amino groups; nitro groups; aryl groups.
  • halogen atoms such as, for example, fluorine, chlorine, preferably fluorine
  • hydroxyl groups such as, for example, fluorine, chlorine, preferably fluorine
  • C 1 -C2 0 alkyl groups C 1 -C2 0 alkoxyl groups
  • cyano groups amino groups
  • nitro groups aryl groups.
  • cycloalkyl groups are: cyclopropyl, 1,4-dioxine, 2, 2-difluorocyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclohexyl , methoxycyclohexyl , fluorocyclohexyl, phenylcyclohexyl .
  • aryl groups means aromatic carbocyclic groups. Said aryl groups can be optionally substituted by one or more groups, equal to or different from each other, selected from: halogen atoms such as, for example, fluorine, chlorine, preferably fluorine; hydroxyl groups; C 1 -C2 0 alkyl groups; C 1 -C2 0 alkoxyl groups, cyano groups; amino groups; nitro groups; aryl groups.
  • aryl groups are: phenyl, methylphenyl , trimethylphenyl , methoxyphenyl , hydroxyphenyl , phenyloxyphenyl , fluorophenyl, pentafluorophenyl , chlorophenyl , nitrophenyl, dimethylaminophenyl , naphthyl, phenylnaphthyl , phenanthrene , anthracene.
  • C 1 -C20 alkoxyl groups refers to linear or branched alkoxyl groups having from 1 to 20 carbon atoms. Said alkoxyl groups can be optionally substituted with one or more groups, equal to or different from each other, selected from: halogen atoms such as, for example, fluorine, chlorine, preferably fluorine; hydroxyl groups; C1 -C20 alkyl groups; C 1 -C20 alkoxyl groups; cyano groups; amino groups; nitro groups.
  • C1 -C20 alkoxyl groups are: methoxyl, ethoxyl, fluoroethoxyl, n-propoxyl, iso- propoxyl, n-butoxyl, n-fluoro-butoxyl , iso-butoxyl, t- butoxyl, pentoxyl, hexyloxyl, heptyloxyl, octyloxyl, nonyloxyl, decyloxyl, dodecyloxyl.
  • cyclo or polycyclic system relates to a system containing one or more rings containing from 3 to 14 carbon atoms, optionally containing heteroatoms selected from nitrogen, oxygen, sulfur, silicon, selenium, phosphorous.
  • Specific examples of the cyclo or polycyclic system are: thieno [3, 2-b] thiophene, thiadiazole, benzothiophene, quinoxaline, pyridine.
  • Said compound having general formula (I) can be obtained according to processes known in the art.
  • R lf R 2 , R3, R4, R5, R6 and R 7 have the same meanings indicated above,
  • Rs is a linear or branched C 1 -C 10 alkyl group, preferably n-butyl
  • X is a halogen atom such as, for example, chlorine, bromine, preferably bromine
  • Pd(PPh3)2Cl2 is bis-
  • the naphthothiadiazole compounds having general formula (II) can be obtained according to processes known in the art, for example, by halogenation of the corresponding naphthothiadiazole compounds. Further details relating to said processes can be found, for example, in "Journal of Heterocyclic Chemistry” (1968), Vol. 5, pages 295-297.
  • the tri-alkyl-stannane compounds having general formula (III) can be obtained according to processes known in the art, for example, by reaction with n-butyl lithium or lithium di-iso-propylamide (LDA) with a tri- alkyltin chloride. Further details relating to said processes can be found, for example, in: "Macromolecules” (2006), Vol. 39, pages 2831-2834.
  • LDA lithium di-iso-propylamide
  • 2- [ tri ( n-butyl ) stannyl ] thiophene corresponding to a compound having general formula (III), wherein R 5 , ]3 ⁇ 4 and R 7 f are hydrogen atoms, and Rs is n-butyl, can be prepared as described, for example, in "Journal of the Chemical Society, Perkin Transaction” (1988), pages 2415-2421.
  • a further object of the present invention also relates to the use of at least one disubstituted naphthothiadiazole compound having general formula (I) in the construction of luminescent solar concentrators (LSCs) .
  • the naphthothiadiazole compound having general formula (I) can be used in said luminescent solar concentrator (LSC) in the following forms: dispersed in the polymer or in the glass, chemically bound to the polymer or glass, in solution, in gel form.
  • the luminescent solar concentrator can contain, for example, a transparent matrix, wherein the term "transparent matrix” refers to any transparent material used in the form of a carrier, ligand, or a material in which at least one disubstituted naphthothiadiazole compound having general formula (I) is dispersed or englobed.
  • the material used for the matrix is transparent, as such, to the radiations of interest and, in particular, to radiations having a frequency within the effective spectrum of the photovoltaic device (or solar device) such as, for example, the photovoltaic cell (or solar cell) in which it is used.
  • Materials suitable for the aim of the present invention can therefore be selected from materials transparent at least to radiations having a wavelength ranging from 250 nm to 1100 nm.
  • the transparent matrix that can be used for the aim of the present invention can be selected, for example, from polymeric or vitreous materials. Said matrix is characterized by a high transparency and by a high duration with respect to heat and light.
  • Polymeric materials which can be advantageously used for the aim of the present invention are, for example, polymethylmethacrylate (PMMA) , epoxy resins, silicon resins, polyalkylene terephthalates , polycarbonates, polystyrene, polypropylene.
  • Vitreous materials which can be advantageously used for the aim of the present invention are, for example, silicas.
  • said at least one disubstituted naphthothiadiazole compound having general formula (I) can be dispersed in the polymer of said matrix by means, for example, of melt dispersion, and subsequent formation of a sheet comprising said polymer and said at least one disubstituted naphthothiadiazole compound having general formula (I), operating, for example, according to the technique known as casting.
  • said at least one disubstituted naphthothiadiazole compound having general formula (I) and the polymer of said matrix can be solubilized in at least one solvent obtaining a solution which is deposited on a sheet of said polymer, forming a film comprising said at least one disubstituted naphthothiadiazole compound having general formula (I) and said polymer, operating, for example, with the use of a Doctor Blade-type film applicator: said solvent is subsequently left to evaporate .
  • said at least one disubstituted naphthothiadiazole compound having general formula (I) can be solubilized in at least one solvent obtaining a solution which is deposited on a sheet of said matrix of the vitreous type, forming a film comprising said at least one disubstituted naphthothiadiazole compound having general formula (I), operating, for example, with the use of a Doctor Blade-type film applicator: said solvent is subsequently left to evaporate.
  • a further object of the present invention also relates to a photovoltaic device (or solar device) selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports, comprising a luminescent solar concentrator (LSC) including at least one disubstituted naphthothiadiazole compound having general formula (I) .
  • a photovoltaic device selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports, comprising a luminescent solar concentrator (LSC) including at least one disubstituted naphthothiadiazole compound having general formula (I) .
  • LSC luminescent solar concentrator
  • Said photovoltaic device (or solar device) can be obtained, for example, by assembling the above luminescent solar concentrator with a photovoltaic cell (or solar cell ) .
  • the above solar concentrator can be produced in the form of a transparent sheet obtained through the solubilization of said at least one disubstituted naphthothiadiazole compound having general formula (I) and of the polymer of the matrix of the polymeric type, in at least one solvent, obtaining a solution which is deposited on a sheet of said polymer forming a film comprising said at least one disubstituted naphthothiadiazole compound having general formula (I) and said polymer, operating, for example, with the use of a Doctor Blade-type film applicator: said solvent is subsequently left to evaporate.
  • said sheets can then be coupled with a photovoltaic cell (or solar cell) .
  • the mixture obtained was immersed in a mixture of dichloromethane (CH 2 CI 2 ) (Aldrich) /saturated solution of sodium chloride (NaClg at .) (Aldrich) in a ratio of 1:10 (v/v) obtaining, after stirring, two phases: one prevalently organic and the other prevalently aqueous.
  • the organic phase obtained was extracted three times with a saturated solution of sodium chloride (NaCl sat .) (Aldrich) to remove the dimethylsulfoxide (DMSO) : the aqueous phases obtained were joined and extracted twice with dichloromethane (CH 2 CI 2 ) (Aldrich) .
  • the filtrate obtained was brought to dryness obtaining a solid residue which was dissolved in the minimum volume of dichloromethane (CH 2 CI 2 ) (Aldrich) and subsequently crystallized by means of a stream of nitrogen (N 2 ) saturated with n- pentane (Carlo Erba) .
  • the crystals obtained were filtered at reduced pressure obtaining 1.02 g of red crystals of 4 , 9-bis ( thien-2 ' -yl ) -naphtho [ 2 , 3- c] [1, 2, 5] thiadiazole (DTN) (yield 100%).
  • a photovoltaic cell IXYS-KXOB22-12 having a surface of 1.2 cm was then applied to one of the edges of the polymeric sheet.
  • the main side of the polymeric sheet [that covered by the thin film containing 4 , 9-bis ( thien-2 ' -yl ) - naphtho [ 2 , 3-c] [ 1 , 2 , 5 ] thiadiazole (DTN)] was then illuminated with a light source having a power of 1 sun (1000 W/m 2 ) and the electric power generated by the effect of the illumination was measured.
  • the power measurements (P) were carried out by illuminating a portion of sheet having dimensions of 100 mm x 90 mm, at an increasing distance (d) from the edge on which the photovoltaic cell was fixed. These measurements, at a variable distance from the photovoltaic cell, allow the contribution of optional waveguide, edge and self-absorption effects, to be quantified .
  • Figure 1 shows the curve relating to the value of the power (P) generated, expressed in mW (indicated in ordinate), in relation to the distance (d) from the edge on which the photovoltaic cell was fixed, expressed in cm (indicated in abscissa) .
  • a photovoltaic cell IXYS-KXOB22-12 having a surface of 1.2 cm was then applied to one of the edges of the polymeric sheet.
  • the power measurements (P) were carried out by illuminating a portion of sheet having dimensions of 100 mm x 90 mm, at an increasing distance (d) from the edge on which the photovoltaic cell was fixed. These measurements, at a variable distance from the photovoltaic cell, allow the contribution of optional waveguide, edge and self-absorption effects, to be quantified .
  • Figure 1 shows the curve relating to the value of the power (P) generated, expressed in mW (indicated in ordinate), in relation to the distance (d) from the edge on which the photovoltaic cell was fixed, expressed in cm (indicated in abscissa) .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

L'invention concerne un concentrateur solaire luminescent (LSC) comprenant au moins un composé naphthothiadiazole disubstitué ayant la formule générale (I): dans cette formule, - R1, R2, R3, R4, R5, R6 et R7, sont égaux ou différents les uns des autres, représentent un atome d'hydrogène; ou sont sélectionnés parmi des groupes alkyle C1 -C20, , de préférence C1 -C10 linéaires ou ramifiés, contenant éventuellement des hétéroatomes, des groupes cycloalkyle éventuellement substitués, des groupes aryles éventuellement substitués, des groupes alcoxy C1 -C20, de préférence C1 -C10, linéaires ou ramifiés, éventuellement substitués; ou R1 et R2 peuvent être éventuellement liés l'un à l'autre de manière à former, conjointement avec les atomes de carbone auxquels ils sont liés, un cycle ou un système polycyclique contenant de 3 à 14 atomes de carbone, de préférence de 4 à 6 atomes de carbone, saturés, insaturés ou aromatiques, contenant éventuellement un ou plusieurs hétéroatomes, tels que par exemple, l'oxygène, le soufre, l'azote, le silicium, le phosphore, le sélénium; ou R2 et R3 peuvent être éventuellement liés l'un à l'autre de manière à former, conjointement avec les atomes de carbone auxquels ils sont liés, un cycle ou un système polycyclique contenant de 3 à 14 atomes de carbone, de préférence de 4 à 6 atomes de carbone, saturés, insaturés ou aromatiques, contenant éventuellement un ou plusieurs hétéroatomes tels que, par exemple, l'oxygène, le soufre, l'azote, le silicium, le phosphore, le sélénium; ou R1 et R4 peuvent être éventuellement liés l'un à l'autre de manière à former, conjointement avec les atomes de carbone auxquels ils sont liés, un cycle ou un système polycyclique contenant de 3 à 14 atomes de carbone, de préférence de 4 à 6 atomes de carbone, saturés, insaturés ou aromatiques, contenant éventuellement un ou plusieurs hétéroatomes, tels que par exemple, l'oxygène, le soufre, l'azote, le silicium, le phosphore, le sélénium; ou R5 et R6 peuvent être éventuellement liés l'un à l'autre de manière à former, conjointement avec les atomes de carbone auxquels ils sont liés, un cycle ou un système polycyclique contenant de 3 à 14 atomes de carbone, de préférence de 4 à 6 atomes de carbone, saturés, insaturés ou aromatiques, contenant éventuellement un ou plusieurs hétéroatomes, tels que par exemple, l'oxygène, le soufre, l'azote, le silicium, le phosphore, le sélénium; R6 et R7 peuvent être éventuellement liés l'un à l'autre de manière à former, conjointement avec les atomes de carbone auxquels ils sont liés, un cycle ou un système polycyclique contenant de 3 à 14 atomes de carbone, de préférence de 4 à 6 atomes de carbone, saturés, insaturés ou aromatiques, contenant éventuellement un ou plusieurs hétéroatomes, tels que par exemple, l'oxygène, le soufre, l'azote, le silicium, le phosphore, le sélénium.
PCT/IB2014/059135 2013-02-21 2014-02-20 Concentrateur solaire luminescent comprenant des composés naphthothiadiazole disubstitués Ceased WO2014128648A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018001919A1 (fr) 2016-06-28 2018-01-04 Merck Patent Gmbh Milieu cristallin liquide
CN109476997A (zh) * 2016-07-19 2019-03-15 默克专利股份有限公司 液晶介质

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