Antithermal Quenching of Luminescence in Zero-Dimensional Hybrid Metal Halide Solids
Bin-Bin Zhang1#, Jia-Kai Chen1#, Ju-Ping Ma2#, Xiao-Fang Jia3#, Qing Zhao4, Shao-Qiang Guo3, Ya-Meng Chen1, Qi Liu1, 4Yoshihiro Kuroiwa, 4Chikako Moriyoshi, Junying Zhang3*（张俊英）, and Hong-Tao Sun1*（孙洪涛）
1 College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
2 Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3Key Laboratory of Micro-nano Measurement, Manipulation and Physics (Ministry of Education), School of Physics, Beihang University, Beijing 100191, Chin
4Department of Physical Science, Hiroshima University, Hiroshima 739-8526, Japan
#B.-B. Zhang, J.-K. Chen, J.-P. Ma, and X.-F. Jia contributed equally to this work.
J. Phys. Chem. Lett. 2020, 11, 2902--2909
Zero-dimensional (0D) hybrid metal halides have emerged as a new generation of luminescent phosphors owing to their high radiative recombination rates, which, akin to their three-dimensional cousins, commonly demonstrate thermal quenching of luminescence. Here, we report on the finding of antithermal quenching of luminescence in 0D hybrid metal halides. Using (C9NH20)2SnBr4 single crystals as an example system, we show that 0D metal halides can demonstrate antithermal quenching of luminescence. A combination of experimental characterizations and first-principles calculations suggests that antithermal quenching of luminescence is associated with trap states introduced by structural defects in (C9NH20)2SnBr4. Importantly, we find that antithermal quenching of luminescence is not only limited to (C9NH20)2SnBr4 but also exists in other 0D metal halides. Our work highlights the important role of defects in impacting photophysical properties of hybrid metal halides and may stimulate new efforts to explore metal halides exhibiting antithermal quenching of luminescence at higher temperatures.
链接：https://pubs.acs.org/doi/10.1021/acs.jpclett.0c00293
