Luminescence Properties of Ce3+ and Tb3+ Doped Gd-Ba-silicate Scintillating Glass

ZHANG Yong; LYU Jing-wen; HAN Bing; JIANG Dong-yue; CHEN Liang-dong

doi:10.3788/fgxb20173801.0037

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Luminescence Properties of Ce³⁺ and Tb³⁺ Doped Gd-Ba-silicate Scintillating Glass

更新时间：2020-08-12

- Luminescence Properties of Ce³⁺ and Tb³⁺ Doped Gd-Ba-silicate Scintillating Glass
- Chinese Journal of Luminescence Vol. 38, Issue 1, Pages: 37-44(2017)
- 作者机构：
  
  1. 吉林师范大学物理学院,吉林四平,136000
  2. 长春理工大学材料物理与工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
  
  Supported by Natural Science Foundation of China(11075026);Science and Technology
- DOI：10.3788/fgxb20173801.0037
  CLC： O482.31
- Received：23 June 2016，
  
  Revised：25 August 2016，
  
  Published：05 January 2017
- 稿件说明：
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张勇, 吕景文, 韩冰等. Ce3+和Tb3+掺杂钆-钡-硅酸盐闪烁玻璃的发光性能[J]. 发光学报, 2017,38(1): 37-44

ZHANG Yong, LYU Jing-wen, HAN Bing etc. Luminescence Properties of Ce3+ and Tb3+ Doped Gd-Ba-silicate Scintillating Glass[J]. Chinese Journal of Luminescence, 2017,38(1): 37-44
张勇, 吕景文, 韩冰等. Ce3+和Tb3+掺杂钆-钡-硅酸盐闪烁玻璃的发光性能[J]. 发光学报, 2017,38(1): 37-44 DOI： 10.3788/fgxb20173801.0037.

ZHANG Yong, LYU Jing-wen, HAN Bing etc. Luminescence Properties of Ce3+ and Tb3+ Doped Gd-Ba-silicate Scintillating Glass[J]. Chinese Journal of Luminescence, 2017,38(1): 37-44 DOI： 10.3788/fgxb20173801.0037.

摘要

采用高温熔融法制备Ce

或Tb

单掺和Ce

/Tb

共掺钆-钡-硅酸盐闪烁玻璃。通过透射光谱、光致激发和发射光谱、X射线激发发射光谱及荧光衰减曲线等手段对其发光性能进行研究。实验结果表明：在紫外光的激发下，Tb

掺杂闪烁玻璃发出明亮的绿光（544 nm），而Ce

掺杂闪烁玻璃发出蓝紫光。对于Ce

/Tb

共掺闪烁玻璃，在紫外光和X射线激发下均观察到Ce

离子敏化Tb

离子发光的现象，这是由于存在Ce

的能量转移。Ce

/Tb

共掺闪烁玻璃的最佳Ce

掺杂摩尔分数为0.2%，此时Ce

离子向Tb

离子的能量传递效率为45.7%。在X射线激发下，Ce

摩尔分数为0.2%的Ce

/Tb

共掺闪烁玻璃在544 nm处的发光强度是Bi

（BGO）闪烁晶体在500 nm处发光强度的4.2倍，积分闪烁效率达到BGO晶体的55.6%，这有利于在高分辨率医学成像中降低辐射剂量。

Abstract

Novel Tb

or Ce

doped and Tb

/Ce

codoped Gd-Ba-silicate scintillating glasses were synthesized by melt-quenching method. The luminescence properties were studied by transmission spectra

photoluminescence excitation and emission spectra

X-ray excited luminescence spectra and luminescence decay curves. The results show that Tb

doped scintillating glasses exhibit bright green emission at about 544 nm and Ce

doped scintillating glasses have a strong purplish-blue light under ultraviolet excitation. For Tb

/Ce

codoped scintillating glasses

ions can strongly sensitize the luminescence of Tb

ions under both UV and X-ray excitation

which is caused by the energy transfer process from Ce

to Tb

ions. The optimal doping mole fraction of Ce

in Tb

/Ce

codoped scintillating glasses was 0.2%. In this case

the evaluated energy transfer efficiency from Ce

to Tb

is about 45.7%. Under X-ray excitation

not only the intensity of 544 nm emission in Tb

/Ce

codoped scintillating glasses with 0.2% of Ce

was 4.2 times than that of 500 nm emission in the commercial Bi

(BGO) crystals

but also the integral scintillation efficiency was about 55.6% of the BGO crystals. It is beneficial for reducing radiative dose to obtain high-resolution medical X-ray imaging.

关键词

Keywords

references

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