Control of the phase evolution of kesterite by tuning of the selenium partial pressure for solar cells with 13.8% certified efficiency

Jiazheng Zhou, Xiao Xu, Huijue Wu, Jinlin Wang, Licheng Lou, Kang Yin, Yuancai Gong, Jiangjian Shi, Yanhong Luo, Dongmei Li, Hao Xin, Qingbo Meng