Effect of non-stoichiometric solution chemistry on improving the performance of wide-bandgap perovskite solar cells

Mengjin Yang, Dong Hoe Kim, Yue Yu, Zhen Li, Obadiah G. Reid, Zhaoning Song, Dewei Zhao, Changlei Wang, Liwei Li, Yuan Meng, Ted Guo, Yanfa Yan, Kai Zhu