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A kind of preparation method of solar cell multifunctional thin film

A solar cell and multi-functional technology, applied in the manufacture of circuits, electrical components, final products, etc., can solve problems such as single function, achieve the effects of reducing backhaul, mild and controllable preparation conditions, and preventing ultraviolet light degradation

Inactive Publication Date: 2017-05-17
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the function of the traditional dense layer is single (only has the function of the barrier layer). In order to further improve the photoelectric conversion performance and long-term stability of the solar cell, prepare a multifunctional film with the function of the barrier layer, the function of the up and down conversion layer, and prevent the degradation of light-absorbing materials. It is of great significance to improve the photoelectric conversion efficiency and long-term stability of solar cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the first step, tin tetrachloride was dissolved in absolute ethanol to prepare 0.5 mmol L -1 Tin tetrachloride dense layer solution;

[0021] The second step is to use the hydrothermal method to mix and dissolve yttrium trioxide, ytterbium trioxide and europium trioxide in a molar ratio of 8:1.9:0.1 in the nitric acid solution, heat, evaporate and concentrate to obtain the nitric acid containing the above three rare earth ions Salt, dispersed in absolute ethanol, prepared with a total concentration of rare earth ions of 0.2mol L -1 ethanol solution;

[0022] In the third step, according to the volume ratio of 1:20, the ethanol solution containing rare earth ions prepared in the second step is added to the tin tetrachloride dense layer solution prepared in the first step, and stirred evenly;

[0023] The fourth step is to clean the FTO conductive substrate, spin-coat the mixed solution prepared in the third step on the cleaned FTO conductive substrate, first spin-co...

Embodiment 2

[0026] In the first step, tin tetrachloride was dissolved in absolute ethanol to prepare 0.5 mmol L -1 Tin tetrachloride dense layer solution;

[0027] The second step is to use the hydrothermal method to mix and dissolve yttrium trioxide, cerium trioxide and dysprosium trioxide in a molar ratio of 8:1.8:0.2 in the nitric acid solution, heat, evaporate and concentrate to obtain the nitric acid containing the above three rare earth ions Salt, dispersed in absolute ethanol, prepared with a total concentration of rare earth ions of 0.3mol L -1 ethanol solution;

[0028] In the third step, according to the volume ratio of 1:25, the ethanol solution containing rare earth ions prepared in the second step is added to the tin tetrachloride dense layer solution prepared in the first step, and stirred evenly;

[0029] The fourth step is to clean the FTO conductive substrate, spin-coat the mixed solution prepared in the third step on the cleaned FTO conductive substrate, first spin-coa...

Embodiment 3

[0032] In the first step, titanium tetrachloride was dissolved in absolute ethanol to prepare 0.3 mmol L -1 Titanium tetrachloride dense layer solution;

[0033] The second step is to use the hydrothermal method to mix and dissolve yttrium trioxide, ytterbium trioxide, and erbium trioxide in a molar ratio of 8:2:0.1 in a trifluoroacetic acid solution, heat, evaporate and concentrate to obtain the above-mentioned three kinds of rare earth ions Trifluoroacetate, dispersed in absolute ethanol, prepared with a total concentration of rare earth ions of 0.3mol L -1 ethanol solution;

[0034] In the third step, according to the volume ratio of 1:15, the ethanol solution containing rare earth ions prepared in the second step is added to the titanium tetrachloride dense layer solution prepared in the first step, and stirred evenly;

[0035] The fourth step is to clean the FTO conductive substrate, spin-coat the mixed solution prepared in the third step on the cleaned FTO conductive s...

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Abstract

The invention discloses a preparation method for a multi-functional film of a solar cell. The method comprises the steps that rare earth ions are uniformly dispersed in a compact layer solution which contains tin or titanium; a film is formed on a conductive substrate material by a scraping method, a rotary coating method or a spraying method; and the tin dioxide or titanium dioxide multi-functional film blended with the rare earth ions is obtained through high-temperature sintering. The film is equipped with functions of a blocking layer, can effectively reduce returning of photo-induced electrons and can further enhance photoelectric performance of the solar cell; the film is capable of upward conversion or downward conversion, so that the scope of an sunlight absorption spectrum of the solar cell can be expanded effectively, and further the photoelectric performance of the solar cell can be enhanced; and the film equipped with the downward conversion can also prevent a light absorption material from being degraded by ultra violet light, so that long-term stability of the solar cell can be effectively enhanced. The film has the advantages that requirements for efficient and low cost solar cell applications can be satisfied; preparation conditions are mild and controllable; the preparation method is simple and effective; the cost is low; and large-scale production can be implemented easily.

Description

technical field [0001] The invention relates to a solar cell functional thin film, in particular to a preparation method of a solar cell multifunctional thin film. Background technique [0002] Dye-sensitized solar cells or perovskite solar cells are a new type of photoelectric conversion device, which has the advantages of high efficiency, low cost, and good stability. Area production, with strong competitiveness, has a wide range of application prospects. The solar cell uses titanium dioxide with good thermal stability and photochemical stability as the matrix semiconductor material, and prepares a layer of light-absorbing material on its surface to absorb visible light and generate photogenerated electrons, thereby achieving the effect of photoelectric conversion. The key to high-efficiency solar cells lies in the preparation of photoanodes. [0003] The existing photoanode preparation method is mainly formed by coating titanium dioxide colloid on a conductive substrate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCH01L31/18Y02P70/50
Inventor 肖尧明韩高义
Owner SHANXI UNIV