氧化锌纳米/微米棒向纳米/微米管的转变过程及阴极发光表征。

Conversion process of ZnO nano-/micro-rods into nano-/micro-tubes and cathodoluminescence characterization.

作者信息

Yan Xaodong, Zou Chongwen, Chen Ray, Li Sean, Yang Jack, Alyamani Ahmed, Bian Jiming, Haemmerle Eric, Gao Wei

机构信息

School of Engineering, The University of Auckland 1142, New Zealand.

出版信息

J Nanosci Nanotechnol. 2011 Apr;11(4):3711-5. doi: 10.1166/jnn.2011.3717.

DOI:10.1166/jnn.2011.3717

PMID:21776760

Abstract

A simple two-steps method has been successfully developed to synthesize ZnO nanotubes. The alkaline etching process was investigated in detail using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The formation of ZnO nanotube structures was due to the preferential dissolution of the defect-rich top (polar) faces. Cathodoluminescence (CL) was performed on both top and side surfaces of the ZnO tubes. Only the near-band-edge UV emission was observed, implying that the as-grown ZnO nanotubes have a very low concentration of defects. This CL result also provides evidence for explanation of ZnO tubular structure growth.

摘要

一种简单的两步法已成功开发用于合成氧化锌纳米管。使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）对碱性蚀刻过程进行了详细研究。氧化锌纳米管结构的形成是由于富含缺陷的顶部（极性）面的优先溶解。对氧化锌管的顶部和侧面都进行了阴极发光（CL）测试。仅观察到近带边紫外发射，这意味着生长的氧化锌纳米管具有非常低的缺陷浓度。该CL结果也为氧化锌管状结构生长的解释提供了证据。