Method for the surface sulfurization of a CIGS layer

Abstract

The invention provides a surface sulfurization method. The method comprises the steps: a deposition technology is adopted to deposit a sulfur layer on a copper indium gallium diselenide (CIGS) layer; an annealing process is performed, and a sulfidizing processing layer is formed on the surface of the CIGS layer. Sulfur is adopted as a making material, and the safety of the method is improved. In addition, the manufacturing speed can be improved by adopting the deposition method, the working time can be reduced, and the manufacturing cost can be further reduced. The method makes that the surface of the CIGS layer is converted to CIGSxSe1-x. By doing so, the power generation efficiency and performance of a CIGSe solar cell is enhanced.

Description

technical field [0001] The invention relates to a method for manufacturing a copper indium gallium selenide (CIGSe) solar cell panel, in particular to a process method for surface vulcanization of a copper indium gallium selenide layer, which converts the surface of a copper indium gallium selenide layer into a copper indium gallium sulfide selenide (CIGS x Se 1-x ) to improve the power generation efficiency and performance of CIGS solar cells. Background technique [0002] Among the materials of thin-film solar cells, CIGSe (copper indium gallium (di) selenide) is a compound semiconductor material composed of copper, indium, gallium, and selenium. It exists in the form of polycrystalline thin films. It is the main light-absorbing material in solar cells. It is a p-type semiconductor. It is usually combined with an n-type semiconductor to form a p-n junction, which can separate the electron-hole pairs generated by light absorption, and collect current at the positive and ne...

AI Technical Summary

Problems solved by technology

[0005] However, hydrogen sulfide itself is toxic. Inhalation of high concentration hydrogen sulfide can be fatal in a short time, while low concentration hydrogen sulfide can affect the eyes, respiratory system and central nervous system. Therefore, the process needs to be carried out in a highly safe state This will result in an increase in production equipment, testing and monitoring equipment, and maintenance costs, and there will also be safety hazards for the staff

In addition, when the gas precursor is used for the process, the process takes a long time, and additional testing and control of process parameters such as gas concentration and gas flow field distribution are required. Production, stability and other requirements

Images