Open Access Nano Express

Fabrication and characterization of hexagonally patterned quasi-1D ZnO nanowire arrays

Shou-Yi Kuo12* and Hsin-I Lin1

Author Affiliations

1 Department of Electronic Engineering, Chang Gung University, Kweishan, Taoyuan 333, Taiwan

2 Advanced Optoelectronic Technology Center, National Cheng-Kung University, Tainan 701, Taiwan

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Nanoscale Research Letters 2014, 9:75  doi:10.1186/1556-276X-9-75

Published: 12 February 2014

Abstract

Quasi-one-dimensional (quasi-1D) ZnO nanowire arrays with hexagonal pattern have been successfully synthesized via the vapor transport process without any metal catalyst. By utilizing polystyrene microsphere self-assembled monolayer, sol–gel-derived ZnO thin films were used as the periodic nucleation sites for the growth of ZnO nanowires. High-quality quasi-1D ZnO nanowires were grown from nucleation sites, and the original hexagonal periodicity is well-preserved. According to the experimental results, the vapor transport solid condensation mechanism was proposed, in which the sol–gel-derived ZnO film acting as a seed layer for nucleation. This simple method provides a favorable way to form quasi-1D ZnO nanostructures applicable to diverse fields such as two-dimensional photonic crystal, nanolaser, sensor arrays, and other optoelectronic devices.

Keywords:
Zinc oxide; Sol–gel-derived ZnO thin films; Quasi-1D ZnO nanowire arrays