A novel long persistent luminescent material CaGeO_(3):Tb^(3+)with photo-stimulation properties  

作　　者：Wei Meng Xiaoyan Fu Tongyan Lin Zewen Liu Naihui Chen Jiaxu Zhang Runyao Liu Rujun Yang Long Chen Hongwu Zhang 

机构地区：[1]School of Chemistry and Material Sciences,Ludong University,Yantai,264025,China [2]College of Materials Science and Engineering,Xiamen University of Technology,Xiamen,361024,China [3]College of Materials,Xiamen University,Xiamen,361005,China

出　　处：《Journal of Rare Earths》2024年第7期1233-1239,I0002,共8页稀土学报（英文版）

基　　金：Project supported by the State Key Research Projects of Shandong Natural Science Foundation(ZR2020KB019);the fund of"Two-Hundred Talent"Plan of Yantai City;the National Natural Science Foundation of China(11974013);the Natural Science Foundation of Fujian Province(2022J011270)。

摘　　要：A novel green long afterglow material CaGeO_(3):Tb^(3+)was synthesized by high temperature solid phase method.According to the experimental results,CaGeO_(3):Tb^(3+)is a green long persistent luminescent(LPL)material with excellent performance.CaGeO_(3):Tb^(3+)shows LPL emission peak at 442,490.9,548.7,588.5 and 623.8 nm,corresponding to ^(5)D_(3) to^(7)F_(4)and^(5)D_(4)to^(7)F_(J)(J=6,5,4,3)transitions of Tb^(3+).Its CIE coordinates are(0.27,0.50),indicating that the afterglow emission is close to the light of green region.In addition,after the excitation source is turned off,the afterglow time is longer than 90 min.After an interval of 7 h,the photo-stimulation luminescence(PSL)can be observed by using 980 nm laser cyclic excitation.The thermoluminescence(ThL)results show that there are three types of traps in the material and their depths are 0.666,0.774 and 0.892 eV respectively,which are caused by the doping of Tb^(3+).All the results show that CaGeO_(3):Tb^(3+)is an excellent long afterglow luminescent material.

关 键 词：Long persistent luminescence Photo-stimulation TRAP CaGeO_(3):Tb^(3+) Rare earths 

分 类 号：TB34[一般工业技术—材料科学与工程]