铈铕共掺高钆氧化物玻璃的发光性能及能量传递效应  

Spectroscopic properties and energy transfer of Ce^(3+)/Eu^(2+) codoped oxide glasses with high Gd_2O_3 concentration

作　　者：沈应龙[1,2] 唐春梅[1,2] 盛秋春[1,2] 刘双[1,2] 李文涛[1,2] 王龙飞[1,2] 陈丹平[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,高功率激光单元技术研发中心,上海201800 [2]中国科学院大学,北京100049

出　　处：《物理学报》2013年第11期496-501,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51272262;50911140475)资助的课题~~

摘　　要：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.Eu2＋/Ce3＋ single doped and co-doped oxide glasses with high Gd203 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 Gd203 concentration.

关 键 词：发光玻璃 能量传递 荧光寿命 

分 类 号：O482.31[理学—固体物理]