Fluorescence enhancement of oxide fluoride glass co-doped with TbF3 and SmF3 |
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| Authors: | S. Nishibu S. Yonezawa M. Takashima |
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| Affiliation: | a Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
b Center for Cooperative Research in Science and Technology, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan |
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| Abstract: | The fluorescence property of xTbF3-BaF2-AlF3-GeO2+ySmF3 (x=0.01-40 mol%, y=0-5 wt%) glasses were investigated. The enhancement of Sm3+ fluorescence was recognized in the presence of Tb3+. Increasing Tb3+ content, the emission color changed from green to orange. When the intensity of fluorescence at 540 nm originated from Tb3+ is compared with that at 600 nm originated from Sm3+, the information about the concentration quenching of Tb3+ and Sm3+ was obtained. From these results, rare earth ions were dispersed identically in the glasses. After heating to 673 K or cooling to 77 K, the emission color of 20TbF3-20BaF2-10AlF3-50GeO2/mol%+0.05 wt% SmF3 glass was reversibly changed from orange to green. In addition, while the emission from 10TbF3-20BaF2-10AlF3-60GeO2+0.01 wt% SmF3 glass was green, its crystallized sample, prepared by annealing at 1073 K, exhibited an orange emission due to Sm3+ at room temperature. |
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| Keywords: | Fluorescence Enhancement Temperature dependence Concentration quenching Tb3+ Sm3+ |
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