Ascertaining the Transient State Pivotal for Fast Carrier Migration in Halide Perovskites - Canglang Yao; Manman Hu; Junseok Kim; Yangkai Wang; Chengzhi Yu; Junyu Qu; Zhiyu Gao; Jiayu You; Cong Chen; Qiuping Huang; Zhengping Fu; Yalin Lu; et al. (Journal of the American Chemical Society, 2026)