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Journal of Nanomaterials
Volume 2010, Article ID 560409, 5 pages
http://dx.doi.org/10.1155/2010/560409
Research Article

Synthesis and Field Emission Properties of Hierarchical ZnO Nanostructures

Key Laboratory of Polar Materials and Devices, Department of Electronic Engineering, East China Normal University, Ministry of Education of China, Shanghai 200241, China

Received 30 November 2009; Accepted 21 April 2010

Academic Editor: Steve Acquah

Copyright © 2010 Deyan Peng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Three novel kinds of hierarchical ZnO nanostructures: nanocombs nanoscrewdrivers and nanonails, have been synthesized in large quantities via a simple thermal evaporation process in the same run of growth in different regions of the quartz tube. The morphologies could be well controlled by adjusting the distances between the source materials and the substrates. These ZnO products were investigated by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. The field emission properties of the ZnO nanostructures were investigated. These hierarchical ZnO nanostructures may be attractive building blocks for field emission microelectronic devices and other devices.