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Method for preparing copper, zinc, tin and sulfur film material

A technology of copper-zinc-tin-sulfur and thin-film materials, which is applied in the fields of final product manufacturing, sustainable manufacturing/processing, and photovoltaic power generation. It can solve the problems of difficult process control, high manufacturing cost, and poor operation convenience, and improve solar energy absorption. High efficiency and photoelectric conversion efficiency, easy operation, and simple equipment

Inactive Publication Date: 2014-12-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation methods of CZTS thin film materials mainly include magnetron sputtering, co-evaporation, hybrid sputtering, and electron beam evaporation vulcanization. However, the above-mentioned methods have high manufacturing costs, poor operation convenience, and difficult control of the process flow.

Method used

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  • Method for preparing copper, zinc, tin and sulfur film material
  • Method for preparing copper, zinc, tin and sulfur film material
  • Method for preparing copper, zinc, tin and sulfur film material

Examples

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preparation example Construction

[0033] like figure 1 As shown in the figure, a method for preparing a copper-zinc-tin-sulfur film material of the present invention includes the following steps: firstly, using copper, zinc, and tin nano-powders as raw materials, mixing with appropriate proportions of sulfur powder, ethylenediamine, anhydrous ethanol and sodium borohydride are evenly mixed, washed and dried after high-energy vibration ball milling to obtain copper-zinc-tin-sulfur nano-powder; secondly, the copper-zinc-tin-sulfur nano-powder obtained in the previous step is mixed with polyvinyl alcohol, isopropanol, iodine The element and isopropanol are uniformly mixed to form a colloidal solution; then, the colloidal solution is used as an electrophoretic solution, and a copper-zinc-tin-sulfur thin film coating is electrophoretically deposited on the substrate by an electrophoretic deposition method to form an electrophoretic deposition film; finally, the electrophoretic deposition film is dried and sulfidati...

Embodiment

[0044] In this example, the method for preparing a copper-zinc-tin-sulfur thin film material with a honeycomb porous structure includes the following steps:

[0045] 1. Weigh 1.92g of copper, 0.97g of zinc, 1.7775g of tin nanopowder, 1.92g of sublimation sulfur powder and 0.13g of sodium borohydride, respectively, and use a graduated cylinder to measure 22ml of absolute ethanol and 2ml of ethylenediamine. The above mixture is uniformly mixed with magnetic stirring to form a slurry;

[0046]2. Put the slurry into a grinding jar with a volume of 70 ml, add 70 g of grinding balls, seal the ball milling jar under the protection of argon and place it in a high-speed vibration ball mill, and grind it at a vibration frequency of 500 times / min. 48 hours;

[0047] 3. The material obtained by ball milling in step 2 is successively washed 3 times with absolute ethanol and deionized water, and the centrifugal speed is set to 500 rpm for 3 minutes; the product after centrifugal washing is...

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Abstract

The invention belongs to the technical field of photoelectrical-material new energy and relates to a method for preparing a copper, zinc, tin and sulfur film material. The method comprises the following steps that copper nano-powder, zinc nano-powder, and tin nano-powder are used as raw materials and are evenly mixed with sulfur powder, quadrol, absolute ethyl alcohol and sodium borohydride, the mixture is washed and dried after ball milling, and then copper, zinc, tin and sulfur nano-powder is obtained; the nano-powder is evenly mixed with polyvinyl alcohol, isopropanol, and iodine elementary substance, so that a colloidal solution used as an electrophoretic solution is formed; a copper, zinc, tin and sulfur film coating is formed on a substrate through electrophoretic deposition with the electrophoretic deposition method, so that an electrophoretic deposition diaphragm is formed; drying, vulcanization and annealing are carried out on the electrophoretic deposition diaphragm, so that the copper, zinc, tin and sulfur film material is formed. According to the method, the copper, zinc, tin and sulfur film material with the honeycomb-shaped cellular structure is prepared according to the electrophoretic deposition technology and the reduction, vulcanization and annealing comprehensive treatment technology and is large in specific surface area, the cost is reduced, and the solar absorptivity and the efficiency of photovoltaic conversion of a film photovoltaic battery are effectively improved. The method is suitable for manufacturing of the film photovoltaic battery.

Description

technical field [0001] The invention belongs to the technical field of new energy sources of optoelectronic materials, in particular to a preparation method of a copper-zinc-tin-sulfur thin film material, in particular to the preparation of a copper-zinc-tin-sulfur (CZTS) compound semiconductor thin film with a specific honeycomb porous structure and a specific crystal structure method. Background technique [0002] Thin-film photovoltaic cells have become one of the very promising development directions in solar photovoltaic conversion and utilization technology because of their large-area and flexible fabrication. By improving the photovoltaic conversion efficiency or specific surface area of ​​thin-film photovoltaic cells, the absorption rate of sunlight per unit area can be increased, thereby improving the utilization rate of solar energy in thin-film photovoltaic cells. The methods of increasing the specific surface area of ​​thin-film photovoltaic cells include: textu...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/032
CPCH01L31/0324H01L31/1828Y02E10/543Y02P70/50
Inventor 慕春红宋远强侯仁博游雪菲刘爱芳胡家瑞何伟东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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