Dy^(3+)和Tb^(3+)掺杂镓硼锗硅酸盐玻璃发光性能  

Luminescence Properties of Ga_2O_3-B_2O_3-GeO_2-SiO_2 Glass Doped with Dy^(3+) and Tb^(3+)

作　　者：殷海荣[1] 唐元元[1] 郭宏伟[1] 莫祖学[1] 王宇飞[1] 宋建波[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《发光学报》2016年第9期1043-1049,共7页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51472151);国际科技合作计划(2009DFR50520);陕西科技大学博士科研启动基金(BJ15-16)资助项目

摘　　要：采用高温熔融法分别制备了高含量Tb^(3+)单掺和Dy^(3+)/Tb^(3+)共掺的镓硼锗硅酸盐(GBSG)发光玻璃,并分析了其光谱性能。根据Dy^(3+)和Tb^(3+)掺杂的镓硼锗硅酸盐(GBSG)玻璃的激发和发射光谱、荧光寿命衰减曲线等特性,探讨了Dy^(3+)与Tb^(3+)之间的能量传递关系。结果表明:玻璃的发光强度和荧光寿命随着Tb^(3+)、Dy^(3+)含量的增加而减少。与相同摩尔浓度的单掺玻璃相比,共掺玻璃发光强度的衰减速率先减慢而后加快。Tb^(3+)、Dy^(3+)离子之间的能量传递方式为无辐射共振能量传递和~4F_(9/2)+~7F_6→~6H_(15/2)+~5D_4交叉弛豫效应。Ga2O3-B2O3-GeO2-SiO2 glasses doped with high Tb^3＋ concentration and co-doped with Tb^3＋ and Dy^3＋ were synthesized by high temperature melting method. The energy transfer between Tb^3＋ and Dy^3＋ was studied according to the excitation and emission spectra and decay time. The results show that the emission intensity and fluorescence lifetime decrease with the increasing of Tb^3＋ and Dy^3＋ content. Compared with the same content of Tb^3＋ single doped glass,the luminous intensity of Dy^3＋ / Tb^3＋ co-doped glass first decreases slowly,and then decreases rapidly. It can be concluded that the energy transfer mechanism between Tb^3＋ and Dy^3＋ includes nonradiative energy resonance transfer and ~4F（9/2）＋~7F6→~6H（15/2）＋~5D4 cross relaxation effect.

关 键 词：能量传递 Dy3+/Tb3+共掺 发光性能 镝离子 铽离子 

分 类 号：O482.31[理学—固体物理]