Effects of phonon confinement on the luminescence dynamics of Eu3+ in Gd2O3 nanotubes
文献类型：期刊论文
| 作者 | L. Q. Liu ; E. Ma ; R. F. Li ; G. K. Liu ; X. Y. Chen |
| 刊名 | Nanotechnology
 |
| 出版日期 | 2007-01 |
| 卷号 | 18期号:1 |
| 关键词 | lanthanide ions energy-transfer nanoparticles nanocrystals photoluminescence films eu2o3 |
| ISSN号 | 0957-4484 |
| 中文摘要 | The effects of phonon confinement on the excited state dynamics of Eu3+ in Gd2O3 nanotubes are investigated. Anomalous thermalization appears due to elimination of low-energy phonon modes in this highly efficient nanophosphor of many potential applications. It is observed that in the low-temperature excitation spectrum hot bands with fine structures originate from the lowest sublevel of F-7(1) at 217 cm(-1) above the ground state. The intensity of the hot bands hardly changes below 50 K, but it increases and exhibits normal Boltzmann thermalization above 50 K. The fluorescence lifetime of D-5(0) (2.19 ms at 10 K) is found to be unusually longer than that of the bulk counterparts, indicating a small filling factor of 0.55 for the nanotubes. These luminescent properties are attributed to the morphology and to the lack of low-energy phonon modes in the nanotubes. |
| 语种 | 英语 |
| 公开日期 | 2013-04-01 |
| 源URL | [http://ir.fjirsm.ac.cn/handle/350002/6491]  |
| 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,E. Ma,R. F. Li,et al. Effects of phonon confinement on the luminescence dynamics of Eu3+ in Gd2O3 nanotubes[J]. Nanotechnology,2007,18(1). |
| APA | L. Q. Liu,E. Ma,R. F. Li,G. K. Liu,&X. Y. Chen.(2007).Effects of phonon confinement on the luminescence dynamics of Eu3+ in Gd2O3 nanotubes.Nanotechnology,18(1). |
| MLA | L. Q. Liu,et al."Effects of phonon confinement on the luminescence dynamics of Eu3+ in Gd2O3 nanotubes".Nanotechnology 18.1(2007). |
入库方式： OAI收割
来源：福建物质结构研究所
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