Various Shapes of ZnO and CdO Nanostructures Grown by Atmospheric-Pressure Chemical Vapor Deposition

被引：8

作者：

Terasako, Tomoaki ^{[1
]}

Fujiwara, Tetsuro ^{[1
]}

Yagi, Masakazu ^{[2
]}

Shirakata, Sho ^{[1
]}

机构：

[1] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

[2] Kagawa Natl Coll Technol, Kagawa 7691192, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2011年 / 50卷 / 01期

基金：

日本学术振兴会;

关键词：

OPTICAL-PROPERTIES; THIN-FILMS; SILICON NANOWIRES; OXIDE NANOWIRES; TRANSPORT; NANOBELTS; CATALYST; ARRAYS; GOLD; H2O;

D O I：

10.1143/JJAP.50.01BJ15

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Various shapes of ZnO and CdO nanostructures were successfully grown on a-and c-plane sapphire substrates coated with Au nanocolloidal solution by atmospheric-pressure chemical vapor deposition methods under a simultaneous source supply of metal powder (Zn or Cd) and H2O. The ZnO and CdO nanorods (NRs) grown at higher substrate temperatures (T(S)s) exhibited tapered shapes, resulting from the competition between the axial growth due to the vapor-liquid-solid (VLS) mechanism and the radial growth due to the vapor-solid (VS) mechanism. The alternate source supply of Zn and H2O was found to be effective for suppressing the tapering of ZnO NRs. The appearance of the Y- and T-shaped nanotrees of CdO may be due to the splitting and migration of catalytic particles during the growth process. These results suggest that both the source supply sequence and the substrate temperature are important factors for the shape design of oxide nanostructures. (C) 2011 The Japan Society of Applied Physics

引用

页数：4

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