Enhanced absorption in the space charge region of GaAs solar cells

Yangfeng Li; Wenqi Wang; Chen Yue; Xiaotao Hu; Yimeng Song; Zaole Su; Haiqiang Jia; Wenxin Wang; Yang Jiang; Hong Chen

doi:10.1209/0295-5075/ac3cd1

All issues

Volume 136 / No 3 (November 2021)

EPL, 136 3 (2021) 37002

Abstract

Issue		EPL Volume 136, Number 3, November 2021


Article Number		37002
Number of page(s)		5
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/ac3cd1
Published online		25 February 2022

EPL, 136 (2021) 37002

Enhanced absorption in the space charge region of GaAs solar cells

Yangfeng Li¹^,2^(a), Wenqi Wang¹^,2, Chen Yue¹^,2, Xiaotao Hu¹^,2, Yimeng Song⁴, Zaole Su¹^,2, Haiqiang Jia¹^,2^,3, Wenxin Wang¹^,2^,3, Yang Jiang¹^,2^(b) and Hong Chen¹^,2^,3^,5^(c)

¹ Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences Beijing 100190, China
² Center of Materials and Optoelectronics Engineering, University of Chinese Academy of Sciences Beijing 100049, China
³ Songshan Lake Materials Laboratory - Dongguan, Guangdong 523808, China
⁴ School of Mathematics and Physics, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, University of Science and Technology Beijing - Beijing 100083, China
⁵ The Yangtze River Delta Physics Research Center - Liyang 213000, China

^(a) liyangfeng12@mails.ucas.ac.cn (corresponding author)
^(b) jiangyang@iphy.ac.cn
^(c) hchen@iphy.ac.cn

Received: 24 August 2021
Accepted: 24 November 2021

Abstract

The photo-generated currents of GaAs solar cells with different lengths of space charge region are obtained and analyzed in this study. The enhanced absorption coefficient in the space charge region is adopted to calculate the photo-generated current based on the solar cell physics theory. The calculated currents coincide well with the experimental currents both under single wavelength incidence and solar spectrum irradiation conditions.

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