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Dye-sensitized solar cell

A technology for solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of reducing photoelectric conversion efficiency, limiting the industrialization development of dye-sensitized solar cells, reducing the durability of dye-sensitized solar cells, etc., and is beneficial to the development of industrialization. , The effect of improving durability and prolonging service life

Inactive Publication Date: 2014-07-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, under long-term illumination, the ultraviolet rays in sunlight will cause the degradation of dye-sensitized solar cells, thereby reducing the photoelectric conversion efficiency and reducing the durability of dye-sensitized solar cells, which limits the industrialization of dye-sensitized solar cells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Preparation of Dye Solution

[0051] The commercially available standard Z907 dye (chemical structural formula such as figure 2 shown) after purification, dissolved in acetonitrile: tert-butanol = 1:1 solvent to prepare a 0.4mmol / L dye solution.

[0052] 2. Photoelectrode fabrication

[0053] Commercially available TiO with a particle diameter of 20 nm 2The paste is coated on the surface of FTO conductive glass by screen printing method, placed in a muffle furnace and sintered at 500 °C for 2 hours to obtain 20 μm TiO 2 membrane. TiO 2 The electrodes were soaked in the dye solution for 2 days.

[0054] 3. Counter electrode fabrication

[0055] A commercially available conductive polymer was coated on the titanium counter electrode substrate by screen printing, placed in a muffle furnace for sintering at 300° C. for 0.5 hour, and cooled to room temperature.

[0056] 4. battery production

[0057] Bond the photoelectrode and the counter electrode with hot ...

Embodiment 2

[0061] The preparation process is the same as in Example 1, except that the photoelectrode is covered with a layer of commercially available UV-resistant polymer film on the side away from the electrolyte layer. After testing, the visible light transmittance of the commercially available UV-resistant polymer film is 91%, the transmittance of light with a wavelength of 372 nm is 0%, and the transmittance of light with a wavelength of 391 nm is 50%, such as Image 6 shown.

[0062] The obtained dye-sensitized solar cell performance is tested, and the results are as follows: Figure 7 As shown, the voltage and current did not change significantly, indicating that the initial performance of the dye-sensitized solar cell obtained in Example 1 was the same as that of the control example.

[0063] The performance of the obtained dye-sensitized solar cell was subjected to an accelerated photoaging experiment. The cell efficiency of the control example dropped to 0 after 100 h, while ...

Embodiment 3

[0065] The preparation process is the same as in Example 1, except that a layer of commercially available anti-ultraviolet coating is coated on the side of the photoelectrode away from the electrolyte layer. After testing, the visible light transmittance of the commercially available anti-ultraviolet coating is 90%. The transmittance of light with a wavelength of 372 nm is 0%, and the transmittance of light with a wavelength of 399 nm is 50%, such as Figure 9 shown.

[0066] The obtained dye-sensitized solar cell performance is tested, and the results are as follows: Figure 10 As shown, the voltage and current did not change significantly, indicating that the initial performance of the dye-sensitized solar cell obtained in Example 1 was the same as that of the control example.

[0067] The performance of the obtained dye-sensitized solar cell was subjected to an accelerated photoaging experiment. The cell efficiency of the control example dropped to 0 after 100 h, while the...

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Abstract

The invention provides a dye-sensitized solar cell comprising a photoelectrode, a counter electrode which is opposite to the photoelectrode, and an electrolyte layer which is kept between the photoelectrode and the counter electrode. One side, away from the electrolyte layer, of the photoelectrode is provided with an ultraviolet-proof layer. According to the dye-sensitized solar cell provided in the invention, the ultraviolet-proof layer can effectively reduce degradation of the dye-sensitized solar cell due to ultraviolet light in the sunlight, thereby improving the durability of the dye-sensitized solar cell, prolonging the service life of the dye-sensitized solar cell, and helping the industrialization development of the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a solar cell, in particular to a dye-sensitized solar cell. Background technique [0002] A solar cell utilizing sunlight has attracted attention as an energy source to replace fossil fuels, and various researches have been conducted on it. A solar cell is a photoelectric conversion device that converts light energy into electrical energy. Since it uses sunlight as an energy source, it has minimal impact on the earth's environment and can be widely used. [0003] In recent years, the research on converting solar energy into light energy has developed rapidly. A dye-sensitized solar cell (Dye-Sensitized Solar Cell, DSSC) that uses light-induced electron movement sensitized by dyes has attracted attention in recent years as a next-generation solar cell that replaces silicon (Si)-based solar cells, etc., and has been Research extensively. The advantages of dye-sensitized solar cells (DSSC) are very prominent: 1. Simple fabricat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/04
CPCY02E10/542
Inventor 李勇明杨松旺陈宗琦沈沪江刘岩
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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