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 and Hong Chen EPL, 136 3 (2021) 37002 Published online: 25 February 2022 DOI: 10.1209/0295-5075/ac3cd1