A V-shaped module technique for promoting generation photocurrent density of silicon solar cells

Jianming Li; Ming Chong; Xiaofeng Duan; Jiadong Xu; Min Gao; Fenglian Wang

doi:10.1117/12.608671

8 December 2004 A V-shaped module technique for promoting generation photocurrent density of silicon solar cells

Jianming Li, Ming Chong, Xiaofeng Duan, Jiadong Xu, Min Gao, Fenglian Wang

Proceedings Volume 5774, Fifth International Conference on Thin Film Physics and Applications; (2004) https://doi.org/10.1117/12.608671
Event: Fifth International Conference on Thin Film Physics and Applications, 2004, Shanghai, China

Abstract

A V-shaped solar cell module consists of two tilted mono-crystalline cells [J. Li, China Patent No. 200410007708.6 (March, 2004)]. The angle included between the two tilted cells is 90 degrees. The two cells were fabricated by using polished silicon wafers. The scheme of both-side polished wafers has been proposed to reduce optical loss. Compared to solar cells in a planar way, the V-shaped structure enhances external quantum efficiency and leads to an increase of 15% in generation photocurrent density. The following three kinds of trapped photons are suggested to contribute to the increase: (1) infrared photons converted from visible photons due to a transformation mechanism, (2) photons reflected from top contact metal, and (3) a residual reflection which can not be eliminated by an antireflection coating.

Citation Download Citation

Jianming Li, Ming Chong, Xiaofeng Duan, Jiadong Xu, Min Gao, and Fenglian Wang "A V-shaped module technique for promoting generation photocurrent density of silicon solar cells", Proc. SPIE 5774, Fifth International Conference on Thin Film Physics and Applications, (8 December 2004); https://doi.org/10.1117/12.608671

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