Zwitterionic Ionic Liquid as Additive for High-Performance FAPbI3 Perovskite Solar Cells with Negligible Hysteresis - Li, Xiangdong; Zou, Yu; Yu, Shangbo; Xin Zhao; Yu, Wenjin; Yang, Shuang; Guo, Haoqing; Xiao, Lixin; Chen, Zhijian; Qu, Bo (SOLAR RRL, 2023)