Mechanoluminescence from Organic–Inorganic Metal Halide Perovskite Derivative
Hongyuan Zhao, Xinyu Yang, Yunfei Bai, Qichao Meng, Ziying Wen, Haibo Sun, Qilin Wei, Dan Huang, William W. Yu, Feng Liu
Abstract
Abstract Metal halide perovskites and their derivatives are gaining significant attention as photoluminescent materials due to their exceptional light‐emitting properties. However, most research has concentrated on electroluminescence and photoluminescence, there remains a substantial gap in the exploration of mechanoluminescence (ML) properties in perovskites, making this field largely uncharted. ML is an ancient and intriguing luminescent phenomenon that occurs when a material is subjected to mechanical forces. Here, the discovery of the first organic–inorganic hybrid terbium (Tb 3+ )‐based metal halide, a type of perovskite derivative, which exhibits notable ML properties is reported. Through material orthogonal design, the critical roles played by molecular geometry and metal‐site ions in achieving remarkable ML in organic–inorganic hybrid metal halides are identified.