A thin-film solar cell and method for preparing same

Abstract

The invention discloses a kind of film solar energy battery and the manufacturing method. The battery is made up of a substrate, polar, a p-type copper indium selenium layer, an n-type cadmium sulfide layer, a p-type multi-crystal silicon layer, an n-type multi-crystal silicon layer and the polar stack. The manufacturing method of the invention is carried on with following steps: 1. uses magnetic control splattering and vacuum selenide quenching method to produce p-type copper indium selenium (GIS) film; 2. n-type cadmium sulfide (CdS) is generated on the p-type copper indium selenium (CIS) with vacuum evaporating method and forms the copper indium selenium / cadmium sulfide (CIS / CdS) compound structure; 3. The p-type multi-crystal silicon layer and the n-type multi-crystal silicon layer are formed on the compound structure with PCVD process and metal leading solid phase crystallization method; 4. The film solar energy battery of multi-crystal silicon-copper indium selenium compound structure is formed.

Description

technical field [0001] The invention relates to a thin-film solar cell and a preparation method thereof. Background technique [0002] Solar cells convert sunlight directly into electricity. Large-scale solar power generation can solve energy problems in areas without electricity, especially remote mountainous areas, and the needs of special occasions such as field activities and field operations. In the long run, if solar cells can be popularized and applied in large quantities, it will not only achieve the purpose of environmental protection, but also gradually change the traditional energy structure, which is of great significance to alleviate the energy shortage in daily life and improve the ecological environment. [0003] At present, the solar cells that are technically mature and dominant in the market are silicon-based solar cells, among which crystalline silicon solar cells are the main failure of vigorous promotion due to their expensive production cost and compli...

AI Technical Summary

Problems solved by technology

[0003] At present, the solar cells that are technically mature and dominant in the market are silicon-based solar cells, among which crystalline silicon solar cells are the main failure of vigorous promotion due to their expensive production cost and complicated preparation process; although amorphous silicon thin-film solar cells are in the market It has advantages over the former in terms of cost and process, but due to the inherent metastable state and multi-defect characteristics of the material, the stability of the battery is low, and the large-area photoelectric conversion efficiency is difficult to further improve

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