Energy levels, fluorescence lifetime and Judd-Ofelt parameters of Eu3+ in Gd2O3 nanocrystals
文献类型：期刊论文
| 作者 | L. Q. Liu ; X. Y. Chen |
| 刊名 | Nanotechnology
 |
| 出版日期 | 2007-06 |
| 卷号 | 18期号:25 |
| 关键词 | crystal-field analysis rare-earth ions cubic yttrium sesquioxide optical absorption kramers ions c2 sites spectra y2o3 intensities nanoparticles |
| ISSN号 | 0957-4484 |
| 中文摘要 | Crystal-field (CF) levels below 36 000 cm(-1) of Eu3+ at the C-2 site of Gd2O3 nanorods are experimentally determined from the excitation and emission spectra at 10 K. The levels are analysed in terms of 20 freely varied free-ion and CF parameters, and energy-level fit yields a final standard deviation of 12.9 cm(-1), showing very good agreement between the observed and the calculated values. The Judd - Ofelt (JO) intensity parameters Omega(2,4,6) are determined to be 12.39, 2.02 and 0.19 ( in 10(-20) cm(2)) which takes J-mixing into account. For the first time the absolute value of the Omega(6) parameter is reliably determined. The calculated radiative transition rates and branching ratios for the transitions from D-5(0) agree well with the experiments. The size dependence of the JO intensity parameters of Eu3+ in RE2O3 (RE = Y, Gd, Lu) nanocrystals is clarified. The fluorescence lifetime of D-5(0) of Eu3+ in Gd2O3 nanorods is observed to be significantly affected by the surrounding media, giving rise to a filling factor of 0.58 for the nanoparticles. |
| 语种 | 英语 |
| 公开日期 | 2013-04-01 |
| 源URL | [http://ir.fjirsm.ac.cn/handle/350002/6489]  |
| 专题 | 福建物质结构研究所_中科院福建物质结构研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | L. Q. Liu,X. Y. Chen. Energy levels, fluorescence lifetime and Judd-Ofelt parameters of Eu3+ in Gd2O3 nanocrystals[J]. Nanotechnology,2007,18(25). |
| APA | L. Q. Liu,&X. Y. Chen.(2007).Energy levels, fluorescence lifetime and Judd-Ofelt parameters of Eu3+ in Gd2O3 nanocrystals.Nanotechnology,18(25). |
| MLA | L. Q. Liu,et al."Energy levels, fluorescence lifetime and Judd-Ofelt parameters of Eu3+ in Gd2O3 nanocrystals".Nanotechnology 18.25(2007). |
入库方式： OAI收割
来源：福建物质结构研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。