Optical and thermoluminescence properties of Lu2Si2O7:Pr single crystal
来源期刊：Journal of Rare Earths2012年第8期
论文作者：冯鹤 任国浩 吴云涛 徐军 杨秋红 谢建军 周明奇 陈晨龙
文章页码：775 - 779
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.
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
1. School of Materials Science and Engineering, Shanghai University2. Shanghai Institute of Ceramics, Chinese Academy of Science3. Department of Materials & Opto-electronic Science, National Sun Yat-Sen University
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.
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