Luminescence of Tb3+‐doped oxide glasses with high Gd2O3 concentration under UV and X‐ray excitation
Luminescence of Tb3+‐doped oxide glasses with high Gd2O3 concentration under UV and X‐ray excitation
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DOI：
10.1002/pssa.201228393
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
W. Chewpraditkul;Q. Sheng;Danping Chen;A. Beitlerova;M. Nikl
中科院分区：
文献类型：
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作者：
W. Chewpraditkul;Q. Sheng;Danping Chen;A. Beitlerova;M. Nikl
本报告介绍了高浓度Gd 2 O3（25 mol%）的Tb 3+掺杂氧化物玻璃在紫外和X射线激发下的发光特性。观察到强烈的绿色5D4 → 7 FJ发光，由于交叉弛豫过程，5D3能级的发光猝灭很强。从Gd ~（3+）到Tb ~（3+）离子的能量转移由发光光谱和衰减测量证实。在X射线激发下，对于0.5wt%Tb3+掺杂的玻璃获得的积分闪烁效率为参考Bi 4Ge 3 O 12晶体的积分闪烁效率的约40%。
This report presents the luminescence properties of Tb3+‐doped oxide glasses with high Gd2O3 (25 mol%) concentration under UV and X‐ray excitation. The intense green 5D4 → 7FJ luminescence is observed with strong luminescence quenching of the 5D3 level due to cross‐relaxation process. Energy transfer from Gd3+ to Tb3+ ions is confirmed by both luminescence spectra and decay measurements. The integral scintillation efficiency obtained for the 0.5 wt% Tb3+‐doped glass under X‐ray excitation is of about 40% of that of the reference Bi4Ge3O12 crystal.