| 稀土发光材料Y2-x-yEuxLiyO3电荷补偿机制和发光机理研究 |
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| 引用本文： | 张睿,顾牡,刘小林,韩坤. 稀土发光材料Y2-x-yEuxLiyO3电荷补偿机制和发光机理研究[J]. 中国材料科技与设备, 2008, 5(4): 43-45 |
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| 作者姓名： | 张睿 顾牡 刘小林 韩坤 |
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| 作者单位： | 同济大学波耳固体物理研究所波与材料微结构实验室,上海200092 |
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| 基金项目： | 基金项目：上海市科委基础研究重点项目（05JC14062）;上海市科委自然科学基金资助项目（05ZR14123） |
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| 摘 要： | 通过Li离子和发光离子共掺杂制备的稀土发光材料可以较大的提高样品的发光强度，本文通过密度泛函计算讨论这种材料中的电荷补偿形式，认为在较大浓度的情况下，对Li离子的电荷补偿主要以单独的间隙氧缺陷为主，间隙氧离子的引入，将会导致材料中出现掺杂能级。此外，基于试验结果，还对发光增强的机理进一步进行了讨论。
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| 关 键 词： | 共掺杂离子 稀土氧化物 密度泛函 电荷补偿 |
The Investigation on the Charge Compensation and Luminescent Mechanism of Rare Earth Luminescent Material Y2-x-yEuxLiyO3 |
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| ZHANG Rui,GU Mu,LIU Xiao-lin,HAN Kun. The Investigation on the Charge Compensation and Luminescent Mechanism of Rare Earth Luminescent Material Y2-x-yEuxLiyO3[J]. Chinese Materials Science Technology & Equipment, 2008, 5(4): 43-45 |
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| Authors: | ZHANG Rui GU Mu LIU Xiao-lin HAN Kun |
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| Affiliation: | (Laboratory of Waves ＆ Microstructure Materials, Pohl Institute of Solid State Physics, Tongji University, Shanghai, 200092,China) |
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| Abstract: | Rare earth oxide luminescent materials co doped with Li^＋ ions always yield higher light output. In this paper,density functional method is adopted to simulate the charge compensation form in the co-doped material. The result shows that the induced defects are mainly in the form of interstitial oxygen ions, which results in the acceptor energy level in the energy gap. Based on the simulation and experimental results the mechanism of emission enhancement by Li^＋ ion co-doping is investi-gated further. |
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| Keywords: | Co-doping Rare earth oxide Density functional Charge compensation |
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