首页|A novel long persistent luminescent material CaGeO3∶Tb3+with photo-stimulation properties

A novel long persistent luminescent material CaGeO3∶Tb3+with photo-stimulation properties

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A novel green long afterglow material CaGeO3∶Tb3+was synthesized by high temperature solid phase method.According to the experimental results,CaGeO3∶Tb3+is a green long persistent luminescent(LPL)material with excellent performance.CaGeO3∶Tb3+shows LPL emission peak at 442,490.9,548.7,588.5 and 623.8 nm,corresponding to 5D3 to 7F4 and 5D4 to 7FJ(J=6,5,4,3)transitions of Tb3+.Its CIE co-ordinates 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 Tb3+.All the results show that CaGeO3∶Tb3+is an excellent long afterglow luminescent material.

Long persistent luminescencePhoto-stimulationTrapCaGeO3∶Tb3+Rare earths

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

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School of Chemistry and Material Sciences,Ludong University,Yantai,264025,China

College of Materials Science and Engineering,Xiamen University of Technology,Xiamen,361024,China

College of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China

College of Materials,Xiamen University,Xiamen 361005,China

School of Chemistry and Material Sciences,Ludong University,Yantai 264025,China

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State Key Research Projects of Shandong Natural Science Foundationfund of"Two-Hundred Talent"Plan of Yantai CityNational Natural Science Foundation of ChinaNatural Science Foundation of Fujian Province

ZR2020KB019119740132022J011270

2024

10.1016/j.jre.2023.08.012

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(7)