| BaCl2:Eu和BaCl2·2H2O:Eu微晶的发光特性 |
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| 引用本文： | 陆肖璞,施朝淑.BaCl2:Eu和BaCl2·2H2O:Eu微晶的发光特性[J].发光学报,1992,13(4):347-354. |
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| 作者姓名： | 陆肖璞 施朝淑 |
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| 作者单位： | 1. 中国科学技术大学物理系, 合肥 230026;2. 中国科学技术大学结构研究开放实验室, 合肥 230026 |
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| 摘 要： | 本文研究了用还原气氛法在箱式炉内制得的BaCl2:Eu2+微晶及进一步处理后得到的BaCl2·2H2O:Eu2+微晶的发光特性,包括发射光谱、激发光谱、热释光、光激励发光(存贮效应)及其温度依赖,就这些特性对BaCl2:Eu与BaCl2·2H2O:Eu进行了比较.根据发光光谱与激发光谱分析了它们具有良好光致发光特性的原因,讨论了这两种材料在热释光性能及光激励发光(存贮效应)上的明显不同,并对BaCl2·2H2O:Eu2+中Eu2+发光的增强提出了可能的解释.
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| 关 键 词： | 氯化钡 铕 掺杂 微晶 发光特性 |
| 收稿时间： | 1991-12-16 |
LUMINESCENCE PROPERTIES OF BaCl2:Eu2+ AND BaCl2·2H2O: Eu2+ CRYSTALLITES |
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| Lu Xiaopu,Shi Chaoshu,Dong Yi,Hou Bihui.LUMINESCENCE PROPERTIES OF BaCl2:Eu2+ AND BaCl2·2H2O: Eu2+ CRYSTALLITES[J].Chinese Journal of Luminescence,1992,13(4):347-354. |
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| Authors: | Lu Xiaopu Shi Chaoshu Dong Yi Hou Bihui |
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| Institution: | 1. Department of Physics, University of Science and Technology of China, Hefei 230026;2. Structure Research Laboratory, USTC, Hefei 230026 |
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| Abstract: | The luminescence characteristics of crystallites of BaCl2:Eu2+, which was prepared by the solid state reductive atmosphere in the box furnace, and BaCl2·2H2O:Eu2+, were studied.The comparison between BaCl2:Eu2+ and BaCl2·2H2O:Eu2+ on emission spectra, excitation spectra, photo-stimulated luminescence (PSL), and thermoluminescence (TL) are reported.The excitation and emission spectra show that both BaCl2:Eu2+ and BaCl2·2H2O:Eu2+ can be excited by the ultraviolet light.At low concentration of Eu2+, both materials can be excited most efficiently by 254nm from a low-pressure mercury lamp. At high concentration of Eu2+, they can also be excited efficiently by 365nm from a high-pressure mercury lamp. |
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