Enhanced amplified spontaneous emission of flexible MAPbBr3 perovskite films with excellent mechanical reliability. - Yang, Jun; Luo, Haoyue; Zeng, Xin; Liu, Xinfeng; Yang, Jie; Huang, Yexiong; Li, Shuaiqi; Li, Bixin; Qi, Qi; Xu, Dongmei; Pi, Mingyu; Yang, Junliang; et al. (Applied Physics Letters, 2024)