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Conferences > AOEE > 2013 > ASu3A > ASu3A.7

High Efficiency Amorphous Silicon-Germanium Thin Film Solar Cells Using Band Gap Grading

Bofei Liu, Lisha Bai, Jian Ni, Huixu Zhao, Changchui wei, Jian sun, Ying Zhao, and Xiaodan Zhang

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Abstract

Amorphous silicon-germanium solar cells with graded germanium content profile in the intrinsic layers are studied in this paper. With proper band gap profile along the film growth direction, single junction solar cell with initial efficiency of 9.07% and a-Si:H/a-SiGe:H tandem cells of 12.03% efficiency.

© 2013 Optical Society of America

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