| 掺杂型BaFBr:Eu2+的热释发光性质的研究 |
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| 引用本文： | 余华,熊光楠,朱汇,高素华,王世铭,李岩.掺杂型BaFBr:Eu2+的热释发光性质的研究[J].光学学报,2002,22(12):497-1500. |
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| 作者姓名： | 余华 熊光楠 朱汇 高素华 王世铭 李岩 |
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| 作者单位： | 天津理工学院材料物理研究所,天津,300191 |
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| 基金项目： | 国家自然科学基金(69677015)，天津市科委重大攻关项目基金(013180611)，天津市重点学科专项基金 |
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| 摘 要： | BaFBr:Eu^2 是利用色心存储电子－空穴对并用可见光激励读出存储信息（产生Eu^2 的4f^65d→4f^7的跃迁）的优良的光激励发光材料。通过热释发光技术研究了BaFBr:Eu^2 的热激活行为，对其低温段和高温段的热释发光峰分别进行了归属，通过对BaFBr:Eu^2 以及掺杂Na^ 或Al^3 的BaFBr:Eu^2 的热释发光（TL）谱和光激励发光（PSL）谱的表征，指出在BaFBr:Eu^2 中掺杂Na^ 或Al^3 影响了F（Br^-）色心，使其陷阱深度变涛，并从理论上加以计算，得出的热致激发能量的变化与光致激光能量的变化能很好地吻合。
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| 关 键 词： | BaFBr：Eu^2＋ 热释发光 光激励发光 色心 铕（Ⅱ） 稀土掺杂 氟溴化钡 |
| 收稿时间： | 2001/11/13 |
Property of Thermal Luminescence in BaFBr:Eu2+ Doped Metal Ions |
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| Yu Hua Xiong Guangnan Zhu Hui Gao Suhua Wang Shiming Li Yan.Property of Thermal Luminescence in BaFBr:Eu2+ Doped Metal Ions[J].Acta Optica Sinica,2002,22(12):497-1500. |
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| Authors: | Yu Hua Xiong Guangnan Zhu Hui Gao Suhua Wang Shiming Li Yan |
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| Abstract: | BaFBr:Eu2+ is good photostimulated luminescent material, which makes use of colour center storage energy and stimulating energy with visible light. The thermal activation of BaFBr :Eu2+ is studied by thermal luminescence experiment. Through spectra of thermal luminescence (TL) and photostimulated luminescence (PSL), the phenomenon shows that doping metal ions influence F(Br- ) center in BaFBr: Eu2+ and make trap depth of F(Br- ) center shallow. A variety of F(Br ) center's trap depth of BaFBr:Eu2 + and BaFBr :Eu2+ doped metal ions is calculated in theory. The results indicate that the variety of trap depth confirm each other in thermal and photo-excitation. |
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| Keywords: | rare earth BaFBr: Eu2+ thermal luminescence photostimulated luminescence colour center |
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