| 阴离子掺杂钨酸铅晶体的生长与发光性能研究 |
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| 引用本文： | 谢建军,施鹰,王剑,袁晖,宋国新,陈良,陈俊锋.阴离子掺杂钨酸铅晶体的生长与发光性能研究[J].人工晶体学报,2009,38(6):1338-1343. |
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| 作者姓名： | 谢建军 施鹰 王剑 袁晖 宋国新 陈良 陈俊锋 |
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| 作者单位： | 上海大学材料科学与工程学院电子信息材料系,上海,200072;中国科学院上海硅酸盐研究所,上海,200050;复旦大学分析测试研究中心,上海,200433 |
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| 基金项目： | 国家自然科学基金，2008上海大学创新基金，中国科学院高性能陶瓷和超微结构国家重点实验室开放基金，上海市自然基金重点项目，上海市重点学科 |
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| 摘 要： | 本文报道了阴离子F~-, Cl~-, I~- 和S~(2-)掺杂的PbWO_4晶体的生长与发光性能.通过对掺杂PbWO_4晶体的X射线粉末衍射、紫外可见区的透过光谱、光致激发、光产额和发光衰减特性进行了测试表征,结果表明:F~-掺杂能使PbWO_4晶体在短波方向的透过率明显提高,显著提高PbWO_4晶体的发光强度,但增加的发光强度主要来自于慢发光的贡献.而随着掺杂阴离子半径和电荷数的增加,PbWO_4晶体的发光强度逐渐降低,并且PbWO_4晶体吸收截止边逐渐向长波方向移动.
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| 关 键 词： | 阴离子掺杂 PbWO_4晶体 光产额 发光衰减 |
Study on Growth and Luminescence Properties of PbWO_4 Crystal Doped with Negative Ions |
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| XIE Jian-jun,SHI Ying,WANG Jian,YUAN Hui,SONG Guo-xin,CHEN Liang,CHEN Jun-feng.Study on Growth and Luminescence Properties of PbWO_4 Crystal Doped with Negative Ions[J].Journal of Synthetic Crystals,2009,38(6):1338-1343. |
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| Authors: | XIE Jian-jun SHI Ying WANG Jian YUAN Hui SONG Guo-xin CHEN Liang CHEN Jun-feng |
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| Abstract: | This article presents the growth and luminescence properties of negative F~-, Cl~-, I~- and S~(2-) ions doped PbWO_4 crystals. Based on the results of measuring their X-ray powder diffraction, UV-VIS optical transmittance, photoluminescence, light yield and luminescence decay time, it can been seen that F- ion doping can obviously increase the optical transmittance at the 350-400 nm range, and enhance the luminescence intensity of PbWO_4 crystal, but the increase of the luminous intensity is mainly attributed to the slow illumination. Along with the increase of doped negative ions radius and the electric charge number,however, the luminescence intensity of PbWO_4 crystal decrease gradually and evident red-shift of the absorption edge is observed. |
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| Keywords: | negative ion doping PbWO_4 crystal light yield luminescence decay |
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