Preparation method of CuInS2 nanometer crystal semiconductor film

A semiconductor and nanocrystalline technology, which is applied in the field of preparation of CuInS2 nanocrystalline semiconductor thin films, can solve problems such as white turbidity, reduced stability, and poor stability of electrodeposition liquid systems, and achieve uniform and stable growth, precise control of film thickness, and enhanced reliability. The effect of controllability and repeatability
CN101746715AActive Publication Date: 2010-06-23BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2010-06-23

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Abstract

The invention belongs to the field of energy source materials. A preparation method of a CuInS2 nanometer crystal semiconductor film comprises the following steps of: preparing electrodeposit liquid by using copper chloride, indium chloride, sodium thiosulfate and lithium chloride as sources of copper, indium and sulfur and supporting electrolyte, and using potassium acid phthalate as both a complexing agent and a pH buffer; adjusting the pH to 1.5-3.5; carrying out electrodeposition under stirring to obtain a precursor film; and keeping the precursor film at a constant temperature of 250-500DEG C for 30-180 min under the protection of inert atmosphere to obtain the CuInS2 nanometer crystal semiconductor film. The method has strong controllability and good repeatability, and the preparedCuInS2 nanometer crystal semiconductor film contains no impurities and is suitable for the material of the light absorption layer of a thin-film solar cell.
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Description

technical field

[0001] The invention belongs to the field of energy materials, in particular to CuInS used as a light absorption layer material for solar cells 2 A method for preparing a nanocrystalline semiconductor thin film. Background technique

[0002] At present, the serious situation of shortage of conventional fossil fuels and deterioration of the ecological environment has made mankind realize that it is necessary to gradually change the energy consumption structure in the future and vigorously develop clean and renewable energy represented by solar energy. As one of the ideal photovoltaic devices that can effectively utilize solar energy resources, compound thin-film solar cells have the advantages of less consumables, low cost, rich material selection, strong designability, and high theoretical photoelectric conversion efficiency compared with commercialized bulk silicon-based solar cells. Therefore, it is favored by the majority of scientific and technological w...

Claims

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