Optical and thermoluminescence properties of Lu2Si2O7:Pr single crystal

被引：0

作者：

冯鹤 ^{[1
]}

任国浩 ^{[2
]}

吴云涛 ^{[2
]}

徐军 ^{[2
]}

杨秋红 ^{[1
]}

谢建军 ^{[1
]}

周明奇 ^{[3
]}

陈晨龙 ^{[3
]}

机构：

[1] School of Materials Science and Engineering, Shanghai University

[2] Shanghai Institute of Ceramics, Chinese Academy of Science

[3] Department of Materials & Opto-electronic Science, National Sun Yat-Sen University

来源：

Journal of Rare Earths | 2012年 / 30卷 / 08期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

Pr3+ doped lutetium pyrosilicate; single crystal; scintillation; optical properties; thermally stimulated luminescence; rare earths;

D O I：

暂无

中图分类号：

O614.33 [镧系元素（稀土元素）];

学科分类号：

070301 ; 081704 ;

摘要：

Single crystal of Lu2Si2O7:Pr was grown by Czochralski method. Transmittance, photoluminescence excitation (PLE) and photo-luminescence (PL) spectra, X-ray excited luminescence (XEL) and fluorescence decay time spectra of the sample were measured and discussed to investigate its optical characteristics. The crystal structure of the as grown Lu2Si2O7:Pr was confirmed to be C2/m. There was a broad absorption peaking at 245 nm in the region from 200-260 nm. The PL spectrum was dominated by fast 3PJ→3HJ band peaking at 524 nm. The XEL spectrum was dominated by the fast 5d14f1→4f2 emission peaking at 265 nm. The 2D (temperature-intensity) and 3D (temperature-wavelength-intensity) thermally stimulated luminescence (TSL) spectra were measured. The Pr3+ ion was found to be the recombination center during the TSL process. Three obvious traps were detected in LPS:Pr single crystal with energy depth at 1.06, 0.78 and 0.67 eV.

引用

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页码：775 / 779

页数：5

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