中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2756-2760.doi: 10.1088/1009-1963/15/11/050

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Temperature dependence of the luminescence properties of LaCl3:Ce crystal

裴钰, 陈晓峰, 秦来顺, 姚冬敏, 任国浩   

  1. Shanghai Institute of Ceramics, Chinese Academy of Sciences,Jiading District, Shanghai 201800, China
  • 收稿日期:2006-05-15 修回日期:2006-06-07 出版日期:2006-11-20 发布日期:2006-11-20

Temperature dependence of the luminescence properties of LaCl3:Ce crystal

Pei Yu(裴钰), Chen Xiao-Feng(陈晓峰), Qin Lai-Shun(秦来顺), Yao Dong-Min(姚冬敏), and Ren Guo-Hao(任国浩)†   

  1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Jiading District, Shanghai 201800, China
  • Received:2006-05-15 Revised:2006-06-07 Online:2006-11-20 Published:2006-11-20

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摘要： The optical properties of LaCl3:Ce crystal are reported in this paper. Optical transmission spectrum, photoluminescence and time resolved photoluminescence spectra at different temperatures are investigated. It is found that optical transmittance is as high as 80{\%} between 320~nm and 600~nm, and no obvious absorption band is found in this region. Emission intensity and decay time of photoluminescence are quite stable with the change of the temperature between 80~K and 500~K. No thermal quenching is present up to 500~K, and decay time keeps at $17\pm 2$~ns. With the increase of the temperature, the whole emission bands and excitation bands present broadening and overlapping,$_{ }$leading to the strengthening of re-absorption of the Ce$^{3 + }$ emission, which makes the emission spectra have a red shift trend.

关键词: LaCl3, scintillator, transmittance, photoluminescence, decay time, temperature dependence

Abstract: The optical properties of LaCl3:Ce crystal are reported in this paper. Optical transmission spectrum, photoluminescence and time resolved photoluminescence spectra at different temperatures are investigated. It is found that optical transmittance is as high as 80% between 320 nm and 600 nm, and no obvious absorption band is found in this region. Emission intensity and decay time of photoluminescence are quite stable with the change of the temperature between 80 K and 500 K. No thermal quenching is present up to 500 K, and decay time keeps at $17\pm 2$ ns. With the increase of the temperature, the whole emission bands and excitation bands present broadening and overlapping, leading to the strengthening of re-absorption of the Ce$^{3 + }$ emission, which makes the emission spectra have a red shift trend.

Key words: LaCl3, scintillator, transmittance, photoluminescence, decay time, temperature dependence

中图分类号:  (Other solid inorganic materials)

  • 78.55.Hx