MECHANISM OF THE EFFECT OF La DOPING ON PbWO4 SINGLE CRYSTAL

Zhang Mingrong; Hu Guanqin; Li Peijun; Xu Li; Yin Zhiwen

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MECHANISM OF THE EFFECT OF La DOPING ON PbWO₄ SINGLE CRYSTAL

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- MECHANISM OF THE EFFECT OF La DOPING ON PbWO₄ SINGLE CRYSTAL
- Chinese Journal of Luminescence Vol. 18, Issue 4, Pages: 320-322(1997)
- 作者机构：
  
  中国科学院上海硅酸盐研究所上海,201800
- 作者简介：
- 基金信息：
- DOI：
  CLC： O73
- Published：30 November 1997
- 稿件说明：
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张明荣, 胡关钦, 李培俊, 徐力, 殷之文. La在La:PWO闪烁晶体中的作用机制探讨[J]. 发光学报, 1997,18(4): 320-322

Zhang Mingrong, Hu Guanqin, Li Peijun, Xu Li, Yin Zhiwen. MECHANISM OF THE EFFECT OF La DOPING ON PbWO4 SINGLE CRYSTAL[J]. Chinese Journal of Luminescence, 1997,18(4): 320-322
张明荣, 胡关钦, 李培俊, 徐力, 殷之文. La在La:PWO闪烁晶体中的作用机制探讨[J]. 发光学报, 1997,18(4): 320-322 DOI：

Zhang Mingrong, Hu Guanqin, Li Peijun, Xu Li, Yin Zhiwen. MECHANISM OF THE EFFECT OF La DOPING ON PbWO4 SINGLE CRYSTAL[J]. Chinese Journal of Luminescence, 1997,18(4): 320-322 DOI：

摘要

根据掺La的PWO晶体(LaPWO晶体)的透射光谱和发射光谱随La浓度的变化特性及其电子顺磁共振(EPR)谱

作者认为

掺La使晶体产生了新的以(La

)

2/3

)

1/3

为主的缺陷

LaPWO晶体的透光性能的改善主要是由于Pb空位(V

)"的增加.而发光性能的降低则主要是(La

)和(V

)"的共同作用.

Abstract

From the results of EPR measurement

i.e.no signal in PbWO

crystals doped with Lathanum (La:PWO)

a conclusion that no EPR center exists in La:PWO crystals was made.The role of La doping was thought as to increase the concentration of Pb

vacancy (V

)" that could improve the optical transmittance of the crystals.And the degradation of luminescent intensities with increasing La concentration may be due to the nonradiative energy transfer of La

ions at Pb

sites and Pb

vacancy.

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