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A kind of photovoltaic film material for solar cell

A technology for solar cells and photovoltaic thin films, applied in the field of solar cells, can solve the problems of low yield, difficult post-processing, and many steps, etc.

Active Publication Date: 2021-03-23
PUTIAN WEITE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above technical problems, the present invention provides a photovoltaic thin film material for solar cells, which overcomes the shortcomings of various previous methods such as many steps, difficult post-processing, and low yield.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0055] A photovoltaic thin film material for solar cells, in parts by weight, the raw materials for the preparation of the photovoltaic thin film material include: 5 parts of nano-spinel powder, 100 parts of nano-copper indium gallium powder;

[0056] The preparation method of the photovoltaic thin film material comprises the following steps:

[0057] (1) Preparation of nano spinel powder:

[0058] MgCl 2 and AlCl 3 Mix according to the molar ratio of 1:2, dissolve in ethanol aqueous solution with a volume concentration of 50%, stir, add ammonia water in a water bath at 50°C, adjust the pH value to 8, and obtain a composite hydroxide precursor;

[0059] Wash the composite hydroxide precursor with water, add 2wt% PEG (M=4000), reflux in ethanol for 2 hours, grind after drying, and roast in a muffle furnace at a temperature of 1000° C.; the roasting time is 2 hours; Prepare nano spinel type powder A;

[0060] The concentrated particle size distribution of the nano spinel pow...

Embodiment 2

[0071] A photovoltaic thin film material for solar cells, in parts by weight, the raw materials for the preparation of the photovoltaic thin film material include: 2 parts of nano-spinel powder, 110 parts of nano-copper indium gallium powder;

[0072] The preparation method of the photovoltaic thin film material comprises the following steps:

[0073] (1) Preparation of nano spinel powder:

[0074] CuCl 2 and CrCl 3 Mix according to the molar ratio of 1:2, dissolve in ethanol aqueous solution with a volume concentration of 75%, stir, add ammonia water in a water bath at 40°C, adjust the pH value to 9, and obtain a composite hydroxide precursor;

[0075] Wash the composite hydroxide precursor with water, add 1wt% PEG (M=3000), reflux in ethanol for 1 hour, grind after drying, and roast in a muffle furnace at a temperature of 800°C; the roasting time is 4 hours; Prepare nano spinel type powder A;

[0076] The particle size of the nano spinel powder A is concentrated in the r...

Embodiment 3

[0087] A photovoltaic thin film material for solar cells, in parts by weight, the raw materials for the preparation of the photovoltaic thin film material include: 2 parts of nano-spinel powder, 90 parts of nano-copper indium gallium powder;

[0088] The preparation method of the photovoltaic thin film material comprises the following steps:

[0089] (1) Preparation of nano spinel powder:

[0090] NiCl 2 and CoCl 3 Mix according to the molar ratio of 1:2, dissolve in ethanol aqueous solution with a volume concentration of 60%, stir, add ammonia water in a water bath at 45°C, adjust the pH value to 8, and obtain a composite hydroxide precursor;

[0091] Wash the composite hydroxide precursor with water, add 3wt% PEG (M=8000), reflux in ethanol for 3 hours, grind after drying, and roast in a muffle furnace at a temperature of 1200° C.; the roasting time is 1 hour; Prepare nano spinel powder A; the particle size of the nano spinel powder A is concentrated in 24-38nm;

[0092]...

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Abstract

The invention belongs to the technical field of solar cells, and particularly relates to a photovoltaic thin film material for a solar cell. The photovoltaic thin film material is prepared from the following raw materials: nano spinel powder and nano copper-indium-gallium powder. The preparation method is simple and overcomes the defects of many steps, difficult post-treatment, low yield and the like of various previous methods. Meanwhile, the method has the advantages of high photoelectric conversion efficiency and low cost of raw materials and production equipment and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a photovoltaic film material used for solar cells. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. In recent years, solar cells have become a hot research topic in the world, and the industry generally believes that the development of solar cells has entered the third generation - thin film solar cells. (The first generation is monocrystalline silicon solar cells, the second generation is polycrystalline silicon, amorphous silicon and other solar cells, and the third generation is compound thin-film solar cells such as copper indium gallium selenide CIGS (CIS is doped with Ga) and thin-film Si-based solar cells .) [0003] CIS was first synthesized by Hahn in 1953. In 1974, Wagner et al prepared a p-type CIS single crystal, evaporated an n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/032H01L31/0216
CPCH01L31/02167H01L31/0322Y02E10/541
Inventor 邵明戴国清佘金荣
Owner PUTIAN WEITE ELECTRONICS
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