Flexible dye-sensitized solar cell

A technology for solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of poor flexibility, affecting the photoelectric performance and service life of the cells in the preparation process of the flexible DSSC photoanode, and complicated processes.

Active Publication Date: 2010-09-22
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One is a high molecular polymer substrate coated with a conductive layer. At present, a layer of inorganic metal oxide ITO (indium tin oxide) conductive layer is commonly used on the high molecular polymer substrate. Disadvantage 1: This layer of ITO The ceramic film is fragile and has poor flexibility, so when the polymer substrate is bent, the ITO conductive film on it is prone to micro cracks, which makes the conductivity of the film worse, and its thermal and chemical stability is also low. It is relatively poor, which will affect the preparation process of the flexible DSSC photoanode and the photoelectric performance and service life of the battery assembled by the flexible DSSC photoanode in the flexible application process
Disadvantage 2: The element indium contained in the ITO conductive film is a rare earth element, the raw material is scarce, and the cost is high
Disadvantage 3: The preparation of ITO conductive film on polymer substrate requires expensive vacuum magnetron sputtering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Select a PET substrate with a thickness of 175 μm, wash it with detergent and absolute ethanol, and coat a layer of polythiophene conductive layer with a thickness of 1 μm on its surface to obtain a sheet resistance of 15Ω / □ and visible light transmittance 78% organic conductive polymer film. The selected polythiophene conductive polymer is a mixture of CLEVIOS PH500 and CLEVIOS PH1000 produced by Bayer, and its preparation method can adopt the method disclosed in the above-mentioned patent.

[0043] The nano titanium dioxide P25 powder that takes 2.4g Degussa production is put into the mortar that fills a certain amount of n-butanol, then add 10g of ethyl cellulose with the same content as 10% n-butanol solution and 5g PEG20000 with a solid content of 20% Methanol solution, mix well and grind for 4h to make TiO 2 slurry. It was printed on the conductive layer of the organic conductive polymer film, and after natural drying, a TiO with a thickness of about 12 μm was o...

Embodiment 2

[0047]Select a PET substrate with a thickness of 188 μm, wash it with detergent and absolute ethanol, and coat a layer of polyaniline conductive layer with a thickness of 2 μm on its surface to obtain a sheet resistance of 23Ω / □ and visible light transmittance. 75% organic conductive polymer film, its specific preparation method: polyaniline conductive polymer (Wuhan Yuancheng Nanjian Technology Development Co., Ltd.) is placed in acetonitrile, isopropanol and titanium tetrachloride mixed solution, acetonitrile, isopropanol and The volume ratio of titanium tetrachloride is 1:2:1, electric stirring for 2 hours, ultrasonic dispersion for 20 minutes, polyaniline is fully dispersed in acetonitrile, isopropanol and titanium tetrachloride mixed solvent, wherein, polyaniline and mixed solvent The mass ratio is 1:50, and then the residual oxidant and polymerized monomers in the polyaniline are removed by filtration, and then dried for use. At room temperature, the polyaniline after th...

Embodiment 3

[0052] Select a PET substrate with a thickness of 125 μm, wash it with detergent and absolute ethanol, and coat a layer of polythiophene conductive layer with a thickness of 0.8 μm on its surface to obtain a sheet resistance of 15Ω / □ and visible light transmission. rate of 83% organic conductive polymer film. The selected polythiophene conductive polymer is a mixture of CLEVIOS PH750 and CLEVIOS PH1000 produced by Bayer, and its preparation method can adopt the method disclosed in the above-mentioned patent.

[0053] Weigh 3.6g of 1mol / L tetrabutyl titanate n-butanol solution and 0.8g of Degussa's nano-titanium dioxide P25 powder and stir for 4h to obtain TiO 2 colloid. It was printed on the conductive layer of the organic conductive polymer film, and after natural drying, a TiO with a thickness of about 14 μm was obtained. 2 film. Then it was boiled in pure water at 100°C for 4h to obtain nano-TiO 2 porous film. TiO will be produced 2 The porous film is dipped into a 4 ...

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Abstract

The invention discloses a flexible dye-sensitized solar cell, which comprises a flexible conducting substrate, a dye-sensitized nano-porous semiconductor film, an electrolyte and a flexible counter electrode. The flexible conducting substrate is that an organic conducting polymer film of an organic conducting polymer layer is coated on a high polymer base material, wherein the thickness of the organic conducting polymer layer is between 0.1 and 3 mu m. The flexible dye-sensitized solar cell has the advantages of good surface uniformity, flexibility and transmittance of the conducting substrate, good flexibility of the cell, no crack after optionally curling, good photoelectric properties and long service life.

Description

technical field [0001] The invention relates to a solar cell, in particular to a flexible dye-sensitized solar cell. Background technique [0002] With its characteristics of no pollution, no transportation, no monopoly, simple maintenance, safe operation and inexhaustibility, solar energy is considered to be the best choice to solve the two major problems of energy depletion and environmental pollution, so countries are actively developing this Green renewable energy. In 1991, the solar cell research group led by Professor Gratzel of the Lausanne Institute of Technology in Switzerland successfully developed the dye-sensitized solar cell (DSSC for short). With the continuous improvement of this kind of solar cell by Gratzel et al., the photoelectric conversion efficiency of DSSC reached 11.9%. Compared with the traditionally used silicon solar cells, this low-cost and environmentally friendly solar cell has the advantages of indoor power generation, large cumulative power ...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/004H01M14/00H01L51/42H01L51/44
CPCH01G9/2095H01G9/2059Y02E10/542H01G9/2031
Inventor 侯丽新张希堂李保民田岚纪雪梅刘贤豪
Owner CHINA LUCKY FILM CORP
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