Long afterglow yellow luminescence from Pr^(3+) doped SrSc_(2)O_(4)  

作　　者：Xiaoyan Fu Shenghui Zheng Yanfeng Meng Wenzhi Sun Hongwu Zhang 

机构地区：[1]College of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China [2]School of Chemistry and Material Sciences,Ludong University,Yantai 264025,China [3]Key Lab of Urban Pollutant Conversion,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China

出　　处：《Journal of Rare Earths》2022年第4期567-571,I0003,共6页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(11974013,51802137);the State Key Research Projects of Shandong Natural Science Foundation(ZR2020KB019);the fund of"Two-Hundred Talent"plan of Yantai City;Major Basic Research Projects of Shandong Natural Science Foundation(ZR2020ZD36)。

摘　　要：A yellow emitting long afterglow luminescence material SrSc_(2)O_(4):Pr^(3+)was successfully prepared by solid state reaction method.SrSc_(2)O_(4):Pr^(3+)phosphor shows a long afterglow luminescence peak at about 495,545,621,630 and 657 nm,respectively,corresponding to the f–f transitions of Pr^(3+).The afterglow chromaticity coordinates of SrSc_(2)O_(4):1 at%Pr^(3+)were calculated to be(0.35,0.41),indicating that the afterglow emission is close to the light of yellow region.And,the afterglow luminescence of the optimal sample doped by 1 at%Pr^(3+)can persist for over 3 h.The thermoluminescence results suggest that there are three types of traps with depth of 0.61,0.69 and 0.78 eV exiting for all the samples,which are produced by the addition of Pr^(3+)ions.The trap density of SrSc_(2)O_(4):1 at%Pr^(3+)is the maximum when the incorporation of Pr^(3+)ions reaches 1 at%,which thus results in the longest afterglow luminescence.All the results indicate that SrSc_(2)O_(4):Pr^(3+)can be a potential candidate of novel long afterglow phosphors.

关 键 词：Long afterglow luminescence SrSc_(2)O_(4):Pr^(3+) TRAPS Long afterglow luminescent mechanism Rare earths 

分 类 号：TB34[一般工业技术—材料科学与工程]