White up-conversion luminescence and highly-sensitive optical temperature sensing in Na_(3)La(VO_(4))_(2):Yb,Er,Tm,Ho phosphors  

作　　者：Qi Xiao Xiumei Yin Lin Lv Xinyao Dong Na Zhou Kuichao Liu Xixian Luo 

机构地区：[1]Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission,Key Laboratory of Photosensitive Materials&Devices of Liaoning Province,School of Physics and Materials Engineering,Dalian Minzu University,Dalian 116600,China [2]Department of Physics,Dalian Maritime University,Dalian 116026,China

出　　处：《Journal of Rare Earths》2023年第7期981-988,I0001,共9页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (11904046,11974069,11504039)。

摘　　要：In this work,tunable white up-conversion luminescence was achieved in the Yb^(3+),Er^(3+),Tm^(3+),Ho^(3+) codoped Na_(3)La(VO_(4))_(2) phosphors under 980 nm excitation.The emissions of three primary colors are mainly attributed to the ~2H_(11/2)/~4S_(3/2)→~4I_(15/2) transitions of Er^(3+),~1G_(4)→~3H_6 transition of Tm^(3+),and_5F_5→~5I_8 transition of Ho^(3+).White luminescence characteristics and mechanisms of up-conversion system were investigated in detail.In addition,the temperature sensing behaviors of multiple levels emission combinations for Na_(3)La(VO_(4))_(2):Yb^(3+),Er^(3+),Tm^(3+),Ho^(3+) were analyzed by employing thermally coupled and non-thermally coupled energy levels.Based on the emissions of ~3F_(2,3)/~1G_(4) energy levels,the maximum relative and absolute sensitivities were obtained to be 2.20%/K and 0.279 K^(-1).The design of up-conversion luminescence materials with high-quality white luminescence and excellent sensitivity performance is critical in the field of optical applications.

关 键 词：UP-CONVERSION Na_(3)La(VO_(4))_(2) White luminescence Temperature sensing Sensitivity Rare earths 

分 类 号：TQ422[化学工程] TP212.11[自动化与计算机技术—检测技术与自动化装置]