| 铈掺杂对BaFBr:Eu2+光激励发光性能的影响 |
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| 引用本文： | 孟宪国,周济.铈掺杂对BaFBr:Eu2+光激励发光性能的影响[J].中国稀土学报,2011,29(1). |
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| 作者姓名： | 孟宪国 周济 |
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| 作者单位： | 1. 清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室,北京,100084;厦门理工学院数理系光电信息技术教研室,厦门,361024
2. 清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金，973项目，博士后经费基金，厦门理工学院引进人才启动项目 |
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| 摘 要： | 采用一步反应法制备了BaFBr:Eu2+,Ce3+X射线影像存储材料.通过荧光光谱和光激励发光谱研究了材料的光致发光及其经X射线辐照后的光激励发光性质.结果发现,Ce离子的掺入使得BaFBr:Eu2+的发光性能明显增强,存在Ce3+离子向Eu2+离子的能量传递,Ce离子的掺杂浓度为0.7%(摩尔分数)左右时可得到较高的光致发光及光激励发光强度.且掺入Ce3+后,可以有效的形成能稳定存储的较低能级的电子陷阱,使得在信息读出过程中所需激励光能量降低,从而使得读出光的能量与价廉、便携的长波激光器的读出波长匹配得更好.
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| 关 键 词： | 光激励发光 色心 电子俘获 稀土 |
Influence of Doped Cerium on Photostimulated Luminescence Properties of BaFBr: Eu2+ |
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| Meng Xianguo,Zhou Ji.Influence of Doped Cerium on Photostimulated Luminescence Properties of BaFBr: Eu2+[J].Journal of the Chinese Rare Earth Society,2011,29(1). |
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| Authors: | Meng Xianguo Zhou Ji |
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| Affiliation: | Meng Xianguo1,2,Zhou Ji1(1.State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China,2.Optoelectronic Information Technology Teaching and Research Section,Department of Mathematics and Physics,Xiamen University of Technology,Xiamen 361024,China) |
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| Abstract: | The X-ray storage phosphor BaFBr:Eu2+,Ce3+ was synthesized in a one-step procedure.The photo-luminescence(PL) and photostimualted luminescence(PSL) after X-ray irradiation of BaFBr:Eu2+,Ce3+ were studied,according to its PL and PSL spectra.The introduction of Ce ion into BaFBr:Eu2+ made PL and PSL intensity of BaFBr:Eu2+,Ce3+ efficiently enhance,and the optimal concentration of Ce ion was about 0.7%.Besides,with the introduction of Ce,the corresponding electron traps with shallow energy level were formed.Th... |
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| Keywords: | photostimulated luminescence color center electron trap rare earths |
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