Tb^(3+)掺杂硅酸盐闪烁玻璃发光特性  

Luminescent Property of Tb^(3+) Doped Silicate Scintillating Glass

作　　者：姜代武[1] 宋博[2] 杨旭[2] 肖洪亮[3] 吕景文[2] 

机构地区：[1]长春理工大学光电信息学院,吉林长春130022 [2]长春理工大学材料科学与工程学院,吉林长春130022 [3]长春理工大学理学院,吉林长春130022

出　　处：《发光学报》2009年第3期363-367,共5页Chinese Journal of Luminescence

摘　　要：对Tb3+掺杂的硅酸盐闪烁玻璃进行了研究。对玻璃基质、敏化剂、发光激活剂组分进行了优化,改进了熔制温度、保温时间、气氛等工艺条件。根据氟化物具有较好的稀土可溶性,具有相对较低的声子能量,调整了闪烁玻璃中的氟化物含量。讨论了Tb3+离子和Gd3+,Dy3+离子对闪烁玻璃发光性能的影响。闪烁玻璃样品的激发和发射光谱、光衰减时间谱等结果显示:闪烁玻璃基质中由Gd3+和Dy3+离子向发光中心Tb3+离子的无辐射能量共振转移以及在一定浓度范围内Tb3+离子之间的交叉弛豫过程对玻璃的发光性能有重要影响。Tb3+离子在一定浓度范围内具有自敏化效应,随着Tb3+离子浓度的增加,绿色荧光得到增强,蓝紫色荧光减弱,Tb3+掺杂硅酸盐闪烁玻璃的发光性能有明显的提高。Tb^3＋ doped silicate scintillating glass was studied in this paper, we optimized Tb^3＋ doped silicate scintillating glass matrix, sensitizer, activator contents, improved the melting temperature, holding time, the atmosphere and so on. According to that fluorides have a better rare earth solubility and a relatively lower pho- non energy,the fluoride content in the scintillating glass was adjusted. The energy transfer between Tb^3＋ and Gd3＋ , Dy^3＋ was studied according to excitation and emission spectra. The results showed that energy transfer occurs from Gd^3＋ and Dy^3＋ ions towards Tb^3＋ emssion centers as well as the cross relaxation among Tb^3＋ ions within a certain concentration range exert tremendous effects on the emission intensity of glass. The Tb^3＋ under the certain concentration range contributes to the enhanced Tb^3＋ green emission and the weakened Tb^3＋ blue emission. Therefore, the luminescent property of Tb^3＋ doped silicate scintillating glass has been noticeably improved.

关 键 词：铽离子 氟化物 发光性能 

分 类 号：O482.31[理学—固体物理]