期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 475, 期 1-2, 页码 741-744出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.07.123
关键词
ZnO nanotubes; Semiconductor; Hydrothermal; Photoluminescence
资金
- National Natural Science Foundation of China [60778040]
- Ministry of Science and Technology of China [2007AA032400448]
- science and technology bureau of Jilin province [20060518]
- gifted youth program of Jilin province [20060123]
- science and technology bureau of Key Program for Ministry of Education [207025]
Well-faceted hexagonal ZnO nanotubes have been synthesized on Si substrates by a simple hydrothermal method and the subsequent aged process at relative low temperature without any catalysts or templates. The samples have been characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) measurement. XRD pattern confirmed that the as-prepared ZnO was the single-phase wurtzite structure. SEM results showed that the samples were tubular textures, with the average lengths of 3-5 mu m, inner diameters of 300-350 nm. The surface-related optical properties have been investigated by photoluminescence (PL) spectrum and Raman spectrum. The PL implied that fairly high surface state density existed in ZnO nanotubes. And the green emission in Raman measurement might be related to surface states. A possible growth mechanism on the formation of crystalline ZnO nanotubes has been presented. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据