Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation

被引：158

作者：

Umar, A

Hahn, YB ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Sch Chem Engn & Technol, Jeonju 561756, South Korea

[2] Chonbuk Natl Univ, Nanomat Proc Res Ctr, Jeonju 561756, South Korea

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 17期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1063/1.2200472

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-crystalline, hexagonal coaxial-shaped ZnO nanocolumns have been synthesized in a large quantity on steel alloy substrate via catalyst-free thermal evaporation of metallic zinc powder at 490 degrees C. The optical-phonon E-2 mode at 437 cm(-1) in Raman spectrum and a strong UV emission at 381 nm in photoluminescence spectrum showed that the synthesized ZnO nanocolumns have a good crystal quality, with a wurtzite hexagonal phase and exhibited a good optical property. A layer-by-layer three-step growth mechanism was proposed for the formation of hexagonal coaxial-shaped ZnO nanocolumns. (c) 2006 American Institute of Physics.

引用

页数：3

共 24 条

[1] Substrate atomic-termination-induced anisotropic growth of ZnO nanowires/nanorods by the VLS process [J].