Thermally enhanced photoluminescence and temperature sensing properties of Sc2W3O12:Eu3+ phosphors  

作　　者：牛毓德 汪玉珍 朱凯明 叶王贵 冯喆 柳挥 易鑫 王怡欢 袁轩一 Yu-De Niu;Yu-Zhen Wang;Kai-Ming Zhu;Wang-Gui Ye;Zhe Feng;Hui Liu;Xin Yi;Yi-Huan Wang;Xuan-Yi Yuan(Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-nano Devices,Department of Physics,Renmin Universityof China,Beijing 100872,China)

机构地区：[1]Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-nano Devices,Department of Physics,Renmin Universityof China,Beijing 100872,China

出　　处：《Chinese Physics B》2023年第2期549-554,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51872327)。

摘　　要：Recently, lanthanide-ion-doped luminescent materials have been extensively used as optical thermometry probes due to their fast responses, non-contact, and high sensitivity properties. Based on different responses of two emissions to temperature, the fluorescence intensity ratio(FIR) technique can be used to estimate the sensitivities for assessing the optical thermometry performances. In this study, we introduce different doping concentrations of Eu^(3+) ions into negative thermal expansion material Sc2W3O12to increase the thermal-enhanced luminescence from 373 K to 548 K, and investigate the temperature sensing properties in detail. All samples can exhibit their good luminescence behaviors thermally enhanced.The emission intensity of Sc2W3O12:6-mol% Eu3+phosphor reaches 147.8% of initial intensity at 473 K. As the Eu3+doping concentration increases, the resistance of the sample to thermal quenching decreases. The FIR technique based on each of the transitions 5D→7F_(1)(592 nm) and 5D→7F_(2)(613 nm) of Eu3+ions demonstrates a maximum relative temperature sensitivity of 3.063% K-1at 298 K for Sc_(2)W_(3)O_(12):6-mol% Eu3+phosphor. The sensitivity of sample decreases with the increase of Eu3+concentration. Benefiting from the thermal-enhanced luminescence performance and good temperature sensing properties, the Sc_(2)W_(3)O_(12):Eu^(3+)phosphors can be used as optical thermometers.

关 键 词：PHOTOLUMINESCENCE Sc_(2)W_(3)O_(12):Eu^(3+) negative lattice expansion thermal-enhanced luminescence 

分 类 号：TQ422[化学工程]