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1. 长春理工大学 材料科学与工程学院,吉林 长春,130022
2. 长春理工大学 理学院, 吉林 长春 130022
3. 长春理工大学 光电信息学院,吉林 长春,130022
收稿日期:2008-08-25,
修回日期:1900-01-02,
网络出版日期:2009-06-30,
纸质出版日期:2009-06-30
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姜代武, 宋 博, 杨 旭, 等. Tb3+掺杂硅酸盐闪烁玻璃发光特性[J]. 发光学报, 2009,30(3):363-367.
JIANG Dai-wu, SONG Bo, YANG Xu, et al. Luminescent Property of Tb3+ Doped Silicate Scintillating Glass[J]. Chinese journal of luminescence, 2009, 30(3): 363-367.
对Tb
3+
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Tb
3+
离子和Gd
3+
Dy
3+
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Gd
3+
和Dy
3+
离子向发光中心Tb
3+
离子的无辐射能量共振转移以及在一定浓度范围内Tb
3+
离子之间的交叉弛豫过程对玻璃的发光性能有重要影响。Tb
3+
离子在一定浓度范围内具有自敏化效应
随着Tb
3+
离子浓度的增加
绿色荧光得到增强
蓝紫色荧光减弱
Tb
3+
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 phonon energy
the fluoride content in the scintillating glass was adjusted. The energy transfer between Tb
3+
and Gd
3+
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.
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