Influence of carbon templates and Yb3+ concentration on red and green luminescence of uniform Y2O3:Yb/Er hollow microspheres
文献类型：期刊论文
| 作者 | Tan, Congbing1; Liu, Yunxin1,2; Han, Yunan1; Li, Wenbin1 |
| 刊名 | JOURNAL OF LUMINESCENCE
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 131页码:1198-1202 |
| 关键词 | Y2O3:Yb/Er Hollow microspheres Luminescence Ratio |
| ISSN号 | 0022-2313 |
| DOI | 10.1016/j.jlumin.2011.02.031 |
| 英文摘要 | Uniform Yb3+ and Er3+-codoped Y2O3 hollow microspheres were synthesized via urea co-precipitation using carbon spheres as templates. Intense red emission (F-4(9/2) -> I-4(15/2)) and weak green emission (H-2(11/2), S-4(3/2) -> I-4(15/2)) of Er3+ were observed for the Yb3+ and Er3+-codoped Y2O3 hollow microspheres under 980 nm infrared excitation. The integrated intensity of visible emission and the ratio of red to green were found to be strongly dependent on the amount of carbon sphere templates and the concentration of Yb3+ ions. The amount of carbon sphere templates also plays an important role in adjusting the size of crystallite. Multi-phonon relaxation resulted from the absorbents (OH- and CO32-) on the surface of the crystallite, and efficient occur of energy transfer processes and cross-relaxation between Er3+ and Yb3+ are responsible for the enhancement of intensity ratio of red to green emission. Interestingly, for higher concentration of Yb3+ ions, the green emission is assigned to a three-phonon process in Y2O3:Yb/Er hollow microspheres, which also could result in the increase of the red to green emission ratio. An explanation to account for these behaviors was presented. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | UP-CONVERSION LUMINESCENCE ; RARE-EARTH IONS ; NAYF4 NANOCRYSTALS ; OPTICAL-PROPERTIES ; EMISSION ; PHOSPHOR ; Y2O3 ; ER3+ ; NANOPARTICLES ; Y2O3-ER3+ |
| 资助项目 | Hunan Provincial Education Department[07C283] |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000290500500017 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Hunan Provincial Education Department |
| 源URL | [http://119.78.100.186/handle/113462/33418]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Tan, Congbing |
| 作者单位 | 1.Hunan Univ Sci & Technol, Sch Phys, Xiangtan 411201, Hunan, Peoples R China 2.Xiangtan Univ, Inst Modern Phys, Xiangtan 411201, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, Congbing,Liu, Yunxin,Han, Yunan,et al. Influence of carbon templates and Yb3+ concentration on red and green luminescence of uniform Y2O3:Yb/Er hollow microspheres[J]. JOURNAL OF LUMINESCENCE,2011,131:1198-1202. |
| APA | Tan, Congbing,Liu, Yunxin,Han, Yunan,&Li, Wenbin.(2011).Influence of carbon templates and Yb3+ concentration on red and green luminescence of uniform Y2O3:Yb/Er hollow microspheres.JOURNAL OF LUMINESCENCE,131,1198-1202. |
| MLA | Tan, Congbing,et al."Influence of carbon templates and Yb3+ concentration on red and green luminescence of uniform Y2O3:Yb/Er hollow microspheres".JOURNAL OF LUMINESCENCE 131(2011):1198-1202. |
入库方式： OAI收割
来源：近代物理研究所
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