Tracking carrier and exciton dynamics in mixed-cation lead mixed-halide perovskite thin films. - Chang, Qing; Bao, Di; Chen, Bingbing; Hu, Hongwei; Chen, Xiaoxuan; Sun, Handong; Lam, Yeng Ming; Zhu, Jian-Xin; Zhao, Daming; Chia, Elbert E. M. (Communications Physics, 2022)