Xiao Guo, Zhenrong Jia, Zijing Dong, Nikhil Kalasariya, Jingcong Hu, Zhuojie Shi, Julian A. Steele, Yi‐Hsun Chen, Gordon Ochsner, Jinxi Chen, Xiangkun Jia, Yu-Duan Wang, Ran Luo, L. K. Lee, Tao Wang, Shunchang Liu, Chao Luo, Jia Ming Li, Martin Stolterfoht, Yi Hou
Based on co-evaporated wide-bandgap perovskites, ∼1% PbCl 2 vapor additive is added to suppress phase segregation and ionic losses, leading to record-stable perovskite–organic tandem cell compared to other kinds of perovskite-based thin-film tandems.