Effect of detrapping on up-conversion charging in LaMgGa_(11)O_(19):Pr^(3+) persistent phosphor  

作　　者：Xiyu Zhao Chenlin Li Feng Liu Xiao-jun Wang 

机构地区：[1]Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education,Northeast Normal University,Changchun 130024,China [2]Department of Physics,Georgia Southern University,Statesboro,GA,30460,USA

出　　处：《Journal of Rare Earths》2021年第12期1492-1496,I0002,共6页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(11774046);the Department of Science and Technology of Jilin Province(20180414082 GH)。

摘　　要：Up-conversion charging(UCC)is a promising approach for charging storage phosphors using low-energy excitation light sources.For further understanding the UCC,research on the competition between trapping and detrapping during illumination is essentially required.Here we demonstrate the effect of detrapping on UCC dynamics by a rate equation approach.Accordingly,taking LaMgGa_(11)O_(19):Pr^(^(3+))phosphor as an example,we experimentally verified the dependence of illumination dose and duration on the thermoluminescence intensities using 450 nm laser excitation.The present model and experimental approach appear to be transferable to other phosphors,Thus,many existing persistent phosphors can now be revisited,paving the way toward advancing the understanding of UCC.

关 键 词：Up-conversion charging Pr^(3+)ion Detrapping Rate equation Thermolumineseence Rare earths 

分 类 号：TQ422[化学工程]