The design of back surface field layer for a single GaAs solar cell

Yankai Xiong; Kemin Tang; Minghui Song; Chao Feng; Yuqin Sun; Chenhui Yu; Zhihao Wu; Hui Xiong; Changqing Chen

doi:10.1117/12.845420

12 October 2009 The design of back surface field layer for a single GaAs solar cell

Yankai Xiong, Kemin Tang, Minghui Song, Chao Feng, Yuqin Sun, Chenhui Yu, Zhihao Wu, Hui Xiong, Changqing Chen

Proceedings Volume 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies; 751811 (2009) https://doi.org/10.1117/12.845420
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

The inclusion of a back surface field (BSF) can significantly improve the efficiency of GaAs solar cells due to a better collection of photogenerated minority carriers. In this work, the efficiency of a single GaAs solar cell has been optimized by varying the material properties of AlGaAs back surface field layer using an advanced commercial software, Crosslight APSYS simulator. By optimizing the Al composition and width of the back surface field layer, a maximum efficiency 25.660% is obtained when Al composition is 0.25 and the width is 0.3 μm. The band diagrams, 2-dimensional relative energy density profile and I-V curve of the device structure with the optimal back surface field layer are also obtained by APSYS.

Citation Download Citation

Yankai Xiong, Kemin Tang, Minghui Song, Chao Feng, Yuqin Sun, Chenhui Yu, Zhihao Wu, Hui Xiong, and Changqing Chen "The design of back surface field layer for a single GaAs solar cell", Proc. SPIE 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies, 751811 (12 October 2009); https://doi.org/10.1117/12.845420

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