Spectroscopic properties and energy transfer in Tb3+-Sm3+ co-doped oxyfluoride glasses

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作者：
Key Laboratory of Advanced Materials, Kunming University of Science and Technology, Kunming 650093, China [1 ]
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来源：
Guangzi Xuebao | 2008年 / SUPPL.卷 / 71-73期
关键词：
Co-doped - Co-doping - Doped glass - Emission color - F-f transitions - Glass systems - Oxy-fluoride glass - Spectroscopic property;
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摘要：
Spectroscopic properties of oxyfluoride glasses with the composition of 50GeO2·20BaF2·10 AlF3(20-x-y)LnF3· xTbF3·ySmF3 (x=0-10 mol%, y=0-1.0 mol%) were investigated. The value of Ω2 in this glass system is larger than those of other glasses, which was calculated by Judd-Ofelt theory based on the f-f transitions of Sm3+. And the fluorescence of Sm3+ was enhanced by co-doping with Tb3+ ions, and the emission color changed from green to orange when increasing Sm3+ concentration in Tb3+ doped glasses. These results indicate that energy transfer occurres between Tb3+ ions and Sm3+ ions. And the mechanism for energy transfer was discussed.
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