Raman and excitonic photoluminescence characterizations of ZnO star-shaped nanocrystals
文献类型：期刊论文
| 作者 | Li, Chunping; Lv, Yuzhen; Guo, Lin; Xu, Huibin; Ai, Xicheng; Zhang, Jianping |
| 刊名 | JOURNAL OF LUMINESCENCE
 |
| 出版日期 | 2007 |
| 卷号 | 122页码:415-417 |
| 关键词 | Zno Temperature-dependent Photoluminescence Raman Exciton Phonon |
| ISSN号 | 0022-2313 |
| DOI | 10.1016/j.jlumin.2006.01.173 |
| 英文摘要 | Optical properties of ZnO star-shaped nanostructures grown by wet chemical solution method were investigated by using Raman scattering and temperature-dependent photoluminescence. High intensity of Raman mode E-2(high) with narrow FWHM of 9cm(-1) appearing at 436 cm(-1) indicates the good quality of ZnO wurtzitic structure. Temperature-dependent ultraviolet photoluminescence was studied over the temperature range from 78 to 293K. At low-temperatures and low-excitation intensities, the dominant spontaneous emissions are due to radiative recombination of excitons bound to donors and one longitudinal optical phonon assistant free exciton A. Finally, only the first-order longitudinal-optical phonon replica of the A free exciton recombination was observed at room temperature. The exciton emission behaviour, including excitonic energy, intensity and line width dependents on the temperature and excitation intensities are discussed. The deep-level emission band is barely observable both at room temperature and at cryogenic temperature measurements. (c) 2006 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000242991900123 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/61977]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Chunping |
| 作者单位 | 1.Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chunping,Lv, Yuzhen,Guo, Lin,et al. Raman and excitonic photoluminescence characterizations of ZnO star-shaped nanocrystals[J]. JOURNAL OF LUMINESCENCE,2007,122:415-417. |
| APA | Li, Chunping,Lv, Yuzhen,Guo, Lin,Xu, Huibin,Ai, Xicheng,&Zhang, Jianping.(2007).Raman and excitonic photoluminescence characterizations of ZnO star-shaped nanocrystals.JOURNAL OF LUMINESCENCE,122,415-417. |
| MLA | Li, Chunping,et al."Raman and excitonic photoluminescence characterizations of ZnO star-shaped nanocrystals".JOURNAL OF LUMINESCENCE 122(2007):415-417. |
入库方式： OAI收割
来源：化学研究所
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