用高温熔融法制备了 Dy3＋/Tb3＋掺杂的高钆镥氟氧化物闪烁玻璃样品,测试分析了其吸收光谱、激发与发射光谱及衰减曲线等。研究了Dy3＋和 Tb3＋离子浓度增加对 Tb3＋离子发光的影响以及Dy3＋离子的浓度猝灭效应；通过 IH 理论模型分析了 Dy3＋和Tb3＋离子的能量传递方式和能量传递效率。结果表明Dy3＋离子对 Tb3＋离子发光具有敏化作用,随着Dy3＋离子浓度增加敏化作用增强,但是当Dy3＋离子的浓度达到2％(摩尔分数)以上时,随着 Dy3＋离子浓度的增加,Tb3＋离子的发光强度降低；Dy3＋和 Tb3＋离子的能量传递方式为无辐射能量传递方式,且能量传递效率可以达到60％以上。
The Dy3+/Tb3+doped oxyfluoride glasses with high Gd((1-x)Lux )2 O3 concentration were prepared by high temperature melting method.The absorption spectra,excitation spectra,emission spectra under UV exci-tations and decay curves of Dy3+ions were measured and analyzed.There are some impact for the luminescence of Tb3+ ions that Dy3+ ions concentration increased,and the energy transfer mechanisms of the Dy3+/Tb3+doped scintillating glasses are analyzed by the I-H theory model.The result show that the Dy3+ ions can sensi-tize the luminescence of Tb3+ ions.The Dy3+ ions have positive impact for luminescence of Tb3+ ions,however when the concentration of Dy3+ ions more than 2mol%,the intensity of emission of Tb3+ ions decrease with the concentration of Dy3+ ions increased.The energy transfer efficiency of between of Dy3+ and Tb3+ ions were cal-culated.The results indicate that the energy transfer mechanism is non-radiative energy transfer,and energy transfer efficiency increases with the concentration of Tb3+ ions.
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