Summary of the invention
In order to solve technical problem of the prior art, the invention provides the preparation method of a kind of metal nanometer line and metal oxide compound transparent electricity conductive film.
Technical scheme of the present invention is specific as follows:
The preparation method of a kind of metal nanometer line and metal oxide compound transparent electricity conductive film may further comprise the steps:
Metal nanometer line solution and metal oxide solution are mixed, make metal nanometer line and metal oxide mixed solution;
Adopt the solution processing method at rigidity or flexible flat substrate preparation metal nanometer line and metal oxide compound transparent electricity conductive film.
In the technique scheme, the thickness of described metal nanometer line and metal oxide compound transparent electricity conductive film is 30-500nm.
In the technique scheme, described metal oxide materials is titanium oxide (TiOx), zinc oxide (ZnO), vanadic oxide (V
2O
5), tungstic acid (WO
3) or molybdenum trioxide (MoO
3) in any one.
In the technique scheme, the solvent in described metal nanometer line solution and the metal oxide solution is ethanol or isopropyl alcohol.
In the technique scheme, described metal oxide solution concentration is 1-30mg/ml.
In the technique scheme, nano wire (NW) dispersion liquid that described metal nanometer line solution is Ag, Au or Cu metal material, its concentration is 0.1-5mg/ml; The diameter of described metal nanometer line is 30-200nm, and length is 5-30 μ m.
In the technique scheme, described rigid plane substrate is glass, quartz or semiconductor; Described flexible flat substrate is plastics.
In the technique scheme, described solution processing method is spin coating, drip be coated with, blade coating or printing solutions processing method.
In the technique scheme, the volume mixture ratio of described metal nanometer line solution and metal oxide solution is 1:100-50:1.
Metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film have following beneficial effect:
Metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film are that metal nanometer line and metal oxide mixed solution are prepared a kind of novel transparent conductive film with satisfactory electrical conductivity and visible light transmissivity that obtains by the solution processing method on planar substrates.Compare with the metal nanometer line transparent conductive film of independent employing metal nanometer line formulations prepared from solutions, metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film have advantages such as surface smoothness height, adhesive force and environmental stability are good, and surface roughness, adhesive force and the environmental stability that has solved the metal nanometer line transparent conductive film effectively be relatively poor problem all.Metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film have the potential quality of using in photoelectric device fields such as thin-film solar cells and Organic Light Emitting Diodes.
Embodiment
Invention thought of the present invention is: a kind of metal nanometer line and metal oxide compound transparent electricity conductive film preparation methods are provided, the structure of the transparent conductive film that it is related as shown in Figure 1:
Planar substrates 100 is rigidity or the flexible flat substrate of materials such as glass, plastics, quartz, semiconductor.
Composite bed 200 is metal nanometer line and the metal oxide compound transparent electricity conductive film of making after metal nanometer line solution and metal oxide solution mix in varing proportions, and thickness is 30-500nm.
The preparation method of above-mentioned composite bed 200 is spin coating, drip be coated with, solution processing methods such as blade coating, printing.
Specifically, the preparation method of metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film:
After metal nanometer line solution and metal oxide solution mixed in varing proportions, adopting the solution processing method was the composite bed 200 of 30-500nm at planar substrates 100 preparation thickness.The volume mixture ratio of metal nanometer line solution and metal oxide solution is 1:100-50:1, and solvent is organic solvents such as ethanol, isopropyl alcohol.
Above-mentioned planar substrates 100 is rigidity or flexible materials such as glass, plastics, quartz or semiconductor.
Above-mentioned metal oxide solution concentration is 1-30mg/ml.Metal oxide materials is TiOx, ZnO, V
2O
5, WO
3Or MoO
3Deng.
Metal nanometer line solution is nano wire (NW) dispersion liquid of metal materials such as Ag, Au or Cu, and the diameter of described metal nanometer line is 30-200nm, and length is 5-30 μ m, and solution concentration is 0.1-5mg/ml.
Above-mentioned solution processing method is spin coating, drip be coated with, solution processing methods such as blade coating, printing.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Below be specifying of embodiment 1 to 9 and Comparative Examples I and II:
Embodiment 1:
Be that the TiOx ethanolic solution of 2mg/ml and AgNW ethanolic solution that concentration is 0.2mg/ml mix with the 1:1 volume ratio with concentration, adopting the method for solution spin coating afterwards is metal nanometer line and the metal-oxide film of 60nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is glass substrate; The diameter of AgNW is 50nm, and length is 15 μ m.
Embodiment 2:
Be that the TiOx ethanolic solution of 4mg/ml and AgNW ethanolic solution that concentration is 0.2mg/ml mix with the 1:1 volume ratio with concentration, adopting the solution spin coating method afterwards is metal nanometer line and the metal-oxide film of 100nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is glass substrate; The diameter of AgNW is 50 nm, and length is 15 μ m.
Embodiment 3:
Be that the TiOx ethanolic solution of 8 mg/ml and AgNW ethanolic solution that concentration is 0.2 mg/ml mix with the 1:1 volume ratio with concentration, adopting the solution spin coating method afterwards is metal nanometer line and the metal-oxide film of 150 nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is glass substrate; The diameter of AgNW is 50 nm, and length is 15 μ m.
Embodiment 4:
Be that the TiOx ethanolic solution of 15 mg/ml and AgNW ethanolic solution that concentration is 0.2 mg/ml mix with the 1:1 volume ratio with concentration, adopting the solution spin coating method afterwards is metal nanometer line and the metal-oxide film of 220nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is glass substrate; The diameter of AgNW is 50 nm, and length is 15 μ m.
The Comparative Examples I:
Adopting the solution spin coating method is the AgNW film of 50 nm at glass substrate preparation thickness.Wherein the diameter of AgNW is 50 nm, and length is 15 μ m.The concentration of AgNW ethanolic solution is 0.2 mg/ml.
Embodiment 5:
Be that the ZnO ethanolic solution of 30 mg/ml and AgNW ethanolic solution that concentration is 0.5 mg/ml mix with the 1:2 volume ratio with concentration, adopting a coating method afterwards is metal nanometer line and the metal-oxide film of 500 nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is quartz base plate; The diameter of AgNW is 200 nm, and length is 30 μ m.
Embodiment 6:
Be the V of 1 mg/ml with concentration
2O
5Aqueous isopropanol and concentration are that the AgNW aqueous isopropanol of 0.1 mg/ml mixes with the 5:1 volume ratio, and adopting the method for solution spin coating afterwards is metal nanometer line and the metal-oxide film of 30nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is plastic base; The diameter of AgNW is 30nm, and length is 5 μ m.
Embodiment 7:
Be the WO of 10mg/ml with concentration
3Aqueous isopropanol and concentration are that the AuNW aqueous isopropanol of 5mg/ml mixes with the 50:1 volume ratio, and adopting afterwards and scraping coating method is metal nanometer line and the metal-oxide film of 200nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is glass substrate; The diameter of AuNW is 70nm, and length is 10 μ m.
Embodiment 8:
Be the MoO of 10mg/ml with concentration
3Aqueous isopropanol and concentration are that the CuNW aqueous isopropanol of 5mg/ml mixes with the 1:100 volume ratio, and adopting printing process afterwards is metal nanometer line and the metal-oxide film of 250nm at planar substrates 100 preparation thickness, as composite bed 200.Wherein this planar substrates 100 is silicon semiconductor substrate; The diameter of CuNW is 30nm, and length is 15 μ m.
Embodiment 9:
Be that to prepare structure be TiOx:AgNW(100nm to negative electrode with embodiment 2)/P3HT:PCBM (mass ratio is 1:1,220nm)/and MoO
3(10nm)/polymer solar battery of Al (100nm).Wherein P3HT and PCBM blend adopt the chlorobenzene dissolving, and utilize its solution spin-coating film, utilize hot platform that the planar glass substrate that scribbles the P3HT:PCBM film is carried out 10 minutes annealing in process of 160 degree then, at last aforesaid substrate is put into thermal evaporation apparatus, when vacuum degree reaches 4.0 * 10
-4During Pascal, on the P3HT:PCBM film, evaporate MoO successively
3With the Al film as anode.
The Comparative Examples II:
Be that to prepare structure be AgNW(50nm to negative electrode with the Comparative Examples I)/P3HT:PCBM (mass ratio is 1:1,220nm)/and MoO
3(10nm)/polymer solar battery of Al (100nm).P3HT:PCBM, MoO
3Identical with embodiment 9 with the preparation process of Al film.
The performance parameter contrast of table 1 transparent conductive film
Table 1 has provided embodiment 1,2,3,4,5,6,7,8 and the visible light mean transmissivity of Comparative Examples I, surface resistance and equal square roughness parameters.As can be seen from Table 1, adopt metal nanometer line and metal oxide compound transparent electricity conductive film can obviously reduce roughness of film, and can realize higher visible light transmissivity and lower surface resistance.
In above-described embodiment of the preparation method of metal nanometer line of the present invention and metal oxide compound transparent electricity conductive film:
As can be seen from Figure 2 adopt metal nanometer line and metal oxide compound transparent electricity conductive film ( embodiment 1,2,3,4) can realize the high permeability of visible region, maximum mean transmissivity reaches 86.2%, and is suitable with single-layer metal nano wire (Comparative Examples I) transparent conductive film transmitance.
As can be seen from Figure 3, along with the increase of metal oxide TiOx concentration, the transmitance of metal nanometer line and metal oxide compound transparent electricity conductive film and all square roughness reduce gradually, and its surface resistance raises to some extent.When metal oxide TiOx concentration is 0mg/ml (Comparative Examples I), because AgNW is inierpeneirating network structure, so film has higher all square roughness (30nm).When metal oxide TiOx concentration raises formation metal nanometer line and metal oxide compound transparent electricity conductive film (embodiment 1,2,3,4) gradually, all square roughness of film are reduced to below the 5nm, and along with the rising of TiOx concentration reduces gradually, the minimum 1.9nm that is down to.This mainly is because TiOx has filled the slit between the AgNW, makes film become more smooth thus.In this simultaneously, the rising of TiOx concentration, the surface resistance of metal nanometer line and metal oxide compound transparent electricity conductive film has been increased to 40 Ω/ from 22 Ω/.Although the introducing of TiOx makes the surface resistance of conductive film increase to some extent, as the electrode of photoelectric device, the surface resistance of Zeng Jiaing is more much smaller to the influence of device performance than high roughness to the influence of device performance slightly.Therefore, compare with single-layer metal nano wire transparent conductive film electrode, metal nanometer line and metal oxide compound transparent electricity conductive film more are conducive to improve the performance of photoelectric device as electrode.
Embodiment 2 places after 100 hours in air as can be seen from Figure 4, its surface resistance has been increased to 60 Ω/ from the 24 Ω/ of beginning, and after the Comparative Examples I placed 100 hours under the same conditions, its surface resistance then had been increased to 550 Ω/ from the 20 Ω/ of beginning.The result shows that metal nanometer line and metal oxide compound transparent electricity conductive film have better environmental stability than individual layer AgNW film.This mainly is because metal oxide materials (for example TiOx film) stable performance in air; its protectiveness covers to act on and has completely cut off contacting of metal nanometer line (for example AgNW film) and air to a certain extent, thereby has improved the environmental stability of transparent conductive film.In addition, by tape paste method the adhesive force in embodiment 2 and the Comparative Examples I is tested, after adhesive tape taken off from film surface, the AgNW film overwhelming majority in the Comparative Examples I comes off and sticks on the adhesive tape, remaining film no longer conducts electricity, show individual layer AgNW adhesion of thin film extreme difference, practicality is very low.And the film of embodiment 2 can not come off in the same test, and surface resistance only has been increased to 28 Ω/ from 24 Ω/, shows that metal nanometer line and metal oxide compound transparent electricity conductive film have good adhesive.
Fig. 5 is the current-voltage characteristic curve of embodiment 9 and Comparative Examples II.The open circuit voltage of Comparative Examples II and embodiment 9, short-circuit current density, fill factor, curve factor and energy conversion efficiency are respectively 0.38 and 0.60 volt, and 7.81 and 8.9 milliamperes/square centimeter, 0.43 and 0.59,1.28% and 3.16%.The result shows, be that the performance of polymer solar battery of negative electrode is apparently higher than being the polymer solar battery of negative electrode with individual layer AgNW film with metal nanometer line and metal oxide compound transparent electricity conductive film, this is because metal nanometer line and metal oxide compound transparent electricity conductive film have higher adhesive force, lower surface roughness and good optics and electrology characteristic, outstanding combination property makes its interface resistance as the electrode of device and active layer little, the interface contact performance is better, makes the performance of polymer solar battery obviously improve.
Obviously, above-described embodiment only is for this patent example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.