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Optical and thermoluminescence properties of Lu_2Si_2O_7:Pr single crystal
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作者 冯鹤 任国浩 +5 位作者 吴云涛 徐军 杨秋红 谢建军 周明奇 陈晨龙 《Journal of Rare Earths》 SCIE EI CAS CSCD 2012年第8期775-779,共5页
Single crystal of Lu2Si2OT:Pr was grown by Czochralski method. Transmittance, photoluminescence excitation (PLE) and photo- luminescence (PL) spectra, X-ray excited luminescence (XEL) and fluorescence decay tim... Single crystal of Lu2Si2OT: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 dis- cussed to investigate its optical characteristics. The crystal structure of the as grown Lu2Si207:Pr was confirmed to be C2/m. There was a broad absorption peaking at 245 um in the region from 200-260 urn. The PL spectntm was dominated by fast 3py^3Hj band peaking at 524 nm. The XEL spectrum was dominated by the fast 5d14t^---~41e emission peaking at 265 nm. The 2D (temperature-intensity) and 3D (tem- perature-wavelength-intensity) thermally stimulated luminescence (TSL) spectra were measured. The Pr3+ ion was found to be the recombina- tion 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. 展开更多
关键词 pr3+ doped lutetium pyrosilicate single crystal scintillation optical properties thermally stimulated luminescence rare earths
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