Highly Stable Orange‐Red Long‐Persistent Luminescent CsCdCl 3 :Mn 2+ Perovskite Crystal

作者：Shuangshuang He, Qinping Qiang, Tianchun Lang, Mingsheng Cai, Tao Han, Houjiang You, Lingling Peng, Shixiu Cao, Bitao Liu, Xiaolong Jing, Bi Jia · 发表于：Angewandte Chemie · 年份：2022 · DOI：10.1002/ange.202208937 · 被引用次数：7 · 研究领域：Perovskite Materials and Applications、Luminescence and Fluorescent Materials、Luminescence Properties of Advanced Materials

Abstract Halide perovskite has been widely studied as a new generation of photoelectronic materials. However, their thermal and humidity‐induced emission quenching have greatly limited their utility and reliability. Here, we report a hexagonal Mn 2+ ‐doped CsCdCl 3 perovskite crystal that possesses stable photoluminescence (PL) at both high temperature and humidity. The room temperature long‐persistent luminescence (LPL) of the single crystals lasts up to 1480 s and can be adjusted by changing the concentration of Mn 2+ ion doping. The characteristic emission of d‐d transition of Mn 2+ is realized, and the photoluminescence quantum yield (PLQY) is up to 91.4 %, it can maintain more than 90 % of the initial PL spectral integral area at 150 °C (423 K). High humid stability PL can be achieved more than 75 % of the initial PL intensity after 55 days of immersion in water. These excellent properties show the application prospect of the LPL material in lighting indication and anti‐counterfeiting.