| SiO2包覆Y2O3:Er3+纳米粉的制备及发光性能 |
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| 引用本文： | 王忠志,申孟林,沈雷军,陈向群,李波,高乐乐,周永勃.SiO2包覆Y2O3:Er3+纳米粉的制备及发光性能[J].发光学报,2011,32(4):342-346. |
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| 作者姓名： | 王忠志 申孟林 沈雷军 陈向群 李波 高乐乐 周永勃 |
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| 作者单位： | 1. 稀土冶金及功能材料国家工程研究中心, 内蒙古 包头 014010;
2. 哈尔滨工业大学 材料物理与化学系, 黑龙江 哈尔滨 150000;
3. 包头稀土研究院, 内蒙古 包头 014010 |
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| 基金项目： | 内蒙古自然科学基金(2009MS0803); 科研院所技术开发专项资金(2010EG113041)资助 |
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| 摘 要： | 用微乳液法合成出SiO2包覆的Er3+掺杂的Y2O3粉体.X射线衍射结果表明,所制备粉体为立方Y2O3结构.透射电镜照片显示,其颗粒形状近似为球形,粒径为20～50 nm.该粉体在波长为980 nm的半导体激光器激发下发射出中心波长为562 nm的绿色和660 nm的红色上转换荧光,分别对应于Er3+离子的4S3/2/...
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| 关 键 词： | 纳米荧光粉 反相微乳液法 上转换发光 纳米核壳结构 |
| 收稿时间： | 2010-10-30 |
Synthesis and Luminescent Properties of Y2O3∶Er3+ Nanometer Powder Coated with SiO2 |
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| WANG Zhong-zhi,SHEN Meng-lin,SHEN Lei-jun,CHEN Xiang-qun,LI Bo,GAO Le-le,ZHOU Yong-bo.Synthesis and Luminescent Properties of Y2O3∶Er3+ Nanometer Powder Coated with SiO2[J].Chinese Journal of Luminescence,2011,32(4):342-346. |
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| Authors: | WANG Zhong-zhi SHEN Meng-lin SHEN Lei-jun CHEN Xiang-qun LI Bo GAO Le-le ZHOU Yong-bo |
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| Institution: | 1. National Engineering Research Center of Rare Earth Metallurgy and Performance Materials, Baotou 014010, China;
2. Harbin Institute of Technology, Harbin 150000, China;
3. Baotou Research Institute of Rare Earth, Baotou 014010, China |
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| Abstract: | The Y2O3 ∶ Er3+ nanometer phosphors coated with SiO2 was synthesized by the microemulsion method. The X-ray diffraction results showed that the as-prepared powders were cubic phase of Y2O3. The TEM pictures demonstrated that the powders have the nearly spherical and the average diameter of the particles was in the range of 60~80 nm. Under the excitation of 980 nm diode laser, a very strong green emission centered at 562 nm and a red emission centered at 660 nm were observed, which were assigned to the transitions of 4S3/2/2H11/2→4I15/2 and 4F9/2→4I15/2 energy levels of Er3+ ions, respectively. The research on luminescent intensity and the exciting power relations revealed that this up-conversion process was a two-photons absorption process. Because Y2O3 (nucleus)/SiO2 (shell) has highly effective performance on the up-conversion luminescence and was easy to dissolve in the water and united with organic matter and biological member, the application of this nanometer nuclear-shell structure material in the biological fluorescence mark domain is significance. |
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| Keywords: | nanometer phosphors reverse microemulsion method up-converting luminescence nanometer nuclear-shell structure |
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