Effect of O2 flow rate on the morphological and optical properties of ZnO nanocrystals
文献类型：会议论文
| 作者 | Tian, Hui Juan2; Xu, Jun Bo2; Tian, Ya Jun1; Wen, Hao3 |
| 出版日期 | 1905-07-04 |
| 会议日期 | July 13, 2012 - July 15, 2012 |
| 会议地点 | Guangzhou, China |
| 关键词 | II-VI semiconductors - Flow rate - Nanocrystals - Optical properties - Zinc oxide - Nanorods - Scanning electron microscopy - Computational fluid dynamics - Thermal evaporation |
| 卷号 | 554-556 |
| DOI | 10.4028/www.scientific.net/AMR.554-556.70 |
| 页码 | 70-75 |
| 英文摘要 | The morphological and optical properties of ZnO nanocrystals prepared by thermal evaporation of Zn powders were studied at both upstream and downstream under different O2 flow rates. The morphological evolution was observed by scanning electron microscopy. With O2 flow rates changing from 0.25 sccm to 1 sccm, the caps of the ZnO nanonails become bigger and the stems gradually disappear at upstream, and the diameters at the top of ZnO nanorods become thicker and the length become longer at downstream. Room temperature PL study shows that UV emission is relatively enhanced with increasing O2 flow rates. Computational fluid dynamics simulation was performed, which indicates that the morphological evolution of the ZnO structures results from the competition between the axial growth and the radial growth based on different O2 and Zn vapor partial pressure. 漏 (2012) Trans Tech Publications, Switzerland. |
| 资助机构 | Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany |
| 会议录 | 2nd International Conference on Chemical Engineering and Advanced Materials, CEAM 2012
 |
| 学科主题 | Chemical Vapor Deposition |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59477]  |
| 作者单位 | 1.National Institute of Clean-and-Low-Carbon Energy, Beijing, 102209, China 2.State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China 3.Graduate University of Chinese Academy of Sciences, Beijing, 100049, China |
| 推荐引用方式 GB/T 7714 | Tian, Hui Juan,Xu, Jun Bo,Tian, Ya Jun,et al. Effect of O2 flow rate on the morphological and optical properties of ZnO nanocrystals[C]. 见:. Guangzhou, China. July 13, 2012 - July 15, 2012. |
入库方式： OAI收割
来源：过程工程研究所
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