期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 48, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202208937
关键词
Hexagonal Perovskite; High Stability; Lead-Free; Luminescent Materials; Mn2+ Doping
资金
- National Natural Science Foundation of China [12174042]
- Key Program of Technology Innovation and Application of Chongqing [2019jscx-nbdxx0023]
- Science and Technology Research Program of Chongqing Municipal Education Commission [KJZD-M201901301]
- Fund for Creative Research Group of Fund for Creative Research Group of Micro-Nano Semiconductor & Photonic Materials of Chongqing Municipal Education Commission
In this study, a hexagonal Mn2+-doped CsCdCl3 perovskite crystal with stable photoluminescence (PL) at both high temperature and humidity was reported. The room temperature long-persistent luminescence (LPL) of the single crystals can last up to 1480 s and can be adjusted by changing the concentration of Mn2+ ion doping. The photoluminescence quantum yield (PLQY) is up to 91.4%, and it can maintain more than 90% of the initial PL spectral integral area at 150 degrees C (423 K). High humidity stability PL can be achieved with more than 75% of the initial PL intensity after 55 days of immersion in water. These excellent properties indicate the potential application of the LPL material in lighting indication and anti-counterfeiting.
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 Mn2+-doped CsCdCl3 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 Mn2+ ion doping. The characteristic emission of d-d transition of Mn2+ 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 degrees 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.
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