Improvement of the crystallinity and efficiency of wide-gap CIGS thin film solar cells with reduced thickness

Weimin Li,Shuda Xu,Yang Dai,Pengchang Ma,Ye Feng,Wenjie Li,Hailin Luo,Chunlei Yang

Materials Letters（2019）

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摘要

•High efficiency high Ga content CuIn0.5Ga0.5Se solar cells is achieved.•Optimum thickness of the wide-gap CIGS absorber is 1.6 µm.•The crystallinity of the wide-bandgap CIGS absorber is enhanced by reducing its thickness.•The carrier collection length of CIGS solar cells is improved by reducing its thickness.

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关键词

Wide bandgap,Microstructure,CIGS solar cells,Thin films,Electron beam induced current

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