Exploring Coupling‐Derived A′‐Site Cations for Crystallization Delay and Defect Passivation in Quasi‐2D Perovskite Light‐Emitting Diodes. - Qin, Xiangqian; Li, Mingliang; Zhao, Yaping; Li, Zelong; Zhang, Hongwei; Luo, Jiefeng; Liu, Chiayun; Li, Jiasheng; Li, Zongtao; Wei, Zhanhua (Angewandte Chemie, 2025)