High-resolution remote thermometry based on Bi^(3+)-doped 0D zinc halide hybrids  

作　　者：Cui-Mi Shi Shu-Hua Xue Jin-Yun Wang Liang-Jin Xu Zhong-Ning Chen 

机构地区：[1]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [2]Fujian Science,Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Chemistry》2024年第8期2599-2605,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (22175181, 92061202, U22A20387);the Fujian Science and Technology Project (2020L3022)。

摘　　要：Developing highly sensitive optical thermometers is of great significance due to their capability to enable remote and non-contact temperature measurements, rendering them highly applicable in diverse and harsh environments. Herein we report a temperature-dependent phosphor of 0D metal halide hybrid by incorporating Bi^(3+)into the(MePPh_(3))_(2)ZnCl_(4) matrix. Through Bi^(3+)doping,the initially non-luminescent(MePPh_(3))_(2) ZnCl_(4) matrix exhibits a deep-blue emission centered at 453 nm, with a photoluminescence quantum yield(PLQY) of 5.71% and a Stokes shift of 75 nm at room temperature. Experimental characterization demonstrates that exciton-like luminescence of Bi^(3+)is mainly responsible for the blue emission. Single crystals of Bi^(3+)-doped(MePPh_(3))_(2)ZnCl_(4) show an unusual correlation between photoluminescence(PL) lifetime and temperature. Particularly, the dependence of luminescence lifetime on temperature is most remarkable in the temperature range of 80 to 100 K with an exceptional sensitivity up to 0.09 K^(-1), representing one of the best levels for thermometry based on PL decay lifetime. Our work not only provides a viable strategy for designing a novel, environmentally friendly, and stable blue emitter, but also paves the way for precise thermometric application at low temperature.

关 键 词：lead-free hybrids Bi^(3+)doping blue emission temperature sensing 

分 类 号：TH811[机械工程—仪器科学与技术]