铈铕共掺高钆氧化物玻璃的发光性能及能量传递效应

在还原气氛下, 采用高温熔融法制备了Eu²⁺/Ce³⁺共掺的高钆氧化物玻璃. 荧光性能测试显示, Ce³⁺能够有效地敏化Eu²⁺的发光, 使Eu²⁺的发光强度增强了2.3倍; 测试对比了Ce³⁺ 发光的荧光寿命随Eu²⁺的掺入前后的变化情况, 计算得出Ce³⁺→Eu²⁺ 的能量传递效率可达61.5%, 并进一步探讨了其能量传递机理. 研究表明: 在高钆氧化物玻璃中, 采用Eu²⁺ 和Ce³⁺ 共掺的方法可有效地增强Eu²⁺ 的发光性能和闪烁性能. 关键词： 发光玻璃 能量传递 荧光寿命

Spectroscopic properties and energy transfer of Ce3+/Eu2+ codoped oxide glasses with high Gd2O3 concentration

Eu²⁺/Ce³⁺ single doped and co-doped oxide glasses with high Gd₂O₃ concentration were prepared in a reducing atmosphere using a high-temperature glass melting method. Excitation and emission spectra measurements indicated that Ce³⁺ can enhance the luminescence intensity of Eu²⁺ effectively, which exhibited a 2.3 times increasa. The difference between the luminescence lifetimes of Eu²⁺ with and without Ce³⁺ doping indicated that the energy transfer efficiency could reach 61.5%, for which the energy transfer mechanism was investigated further. These researches suggest that co-doping method can significantly improve the luminescence capabilities of Eu³⁺ in the oxide glasses with high Gd₂O₃ concentration.
Keywords： luminescence glass energy transfer luminescence lifetime