6H‐Intermediate Phase Enabled Slow Crystal Growth of Tin Halide Perovskites for Indoor Photovoltaics. - Abdel‐Shakour, Muhammad; Wang, Junfang; Huang, Junjie; Gao, Zhen; Pan, Yongle; Meng, Xiangyue (Angewandte Chemie International Edition, 2025)