| Ca3MgSi2O8中Ce3+的光谱及其晶体学格位 |
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| 引用本文： | 黄立辉,林海,王晓君,刘行仁. Ca3MgSi2O8中Ce3+的光谱及其晶体学格位[J]. 光谱学与光谱分析, 2000, 20(3): 265-267 |
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| 作者姓名： | 黄立辉 林海 王晓君 刘行仁 |
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| 作者单位： | 1. 中国科学院长春物理研究所,130021,长春
2. 中国科学院长春物理研究所,130021,长春;中国科学院激发态物理开放研究实验室,130021,长春 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金，715-003-0060，19574053，， |
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| 摘 要： | 本文合成了发射蓝紫色光的镁硅钙石Ｃａ３ＭｇＳｉ２Ｏ８：Ｃｅ＾３＋荧光体。测试了该荧光体的激发和发射光谱。利用这些光谱结果和Ｖａｍ Ｕｉｔｅｒｔ经验公式，结合对Ｃａ３ＭｇＳｉ２Ｏ８晶体的结构研究，确认Ｃａ３ＭｇＳｉ２Ｏ３：Ｃｅ＾３＋中存在两种性质有差异的Ｃｅ＾３＋发光中心，它们分别占据基质中的两种八配位的钙格位。
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| 关 键 词： | 三价铈离子 光谱 晶体学格位 镁硅钙石 Ca3MgSi2 |
Spectra and Crystallographic Sites of Ce3+ in Ca3MgSi2O8 |
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| Lihui HUANG,Hai LIN,Xiaojun WANG,Xingren LIU. Spectra and Crystallographic Sites of Ce3+ in Ca3MgSi2O8[J]. Spectroscopy and Spectral Analysis, 2000, 20(3): 265-267 |
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| Authors: | Lihui HUANG Hai LIN Xiaojun WANG Xingren LIU |
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| Affiliation: | Changchun Institute of Physics, Chinese Academy of Sciences, 130021 Changchun. |
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| Abstract: | An efficiency purplish blue phosphor Ca3MgSi2O8:Ce3+ has been synthesized. The emission and excitation spectra of Ca3MgSi2O8:Ce3+ under 260 nm and 360 nm excitations show that they have their common broad band emission characters, but the maximums and the band widths of the emission spectra are different. The excitation spectra of Ce3+ 350 nm emission and 460 nm emission clearly show that there are remarkable differences. These results indicate that there are two kinds of Ce3+ emission centers in the host of Ca3MgSi2O8. According the analysis of the crystal structure and the Van Uitert's empirical equation, we have a conclusion that two centers occupy two kinds of octacoordinated Ca sites, respectively. |
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| Keywords: | Ce- 3+ ion Phosphor Spectra Emission c enter Crystallographic sites |
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