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Journal of Nanomaterials
Volume 2013 (2013), Article ID 478942, 7 pages
http://dx.doi.org/10.1155/2013/478942
Research Article

Morphological, Structural, and Electrical Characterization of Sol-Gel-Synthesized ZnO Nanorods

1Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, Malaysia
2Nanotechnology and Catalysis Research Centre, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Electronic Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan

Received 18 November 2012; Accepted 3 February 2013

Academic Editor: Ping Xiao

Copyright © 2013 M. Kashif 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

ZnO nanorods were grown on thermally oxidized p-type silicon substrate using sol-gel method. The SEM image revealed high-density, well-aligned, and perpendicular ZnO nanorods on the oxidized silicon substrate. The XRD profile confirmed the c-axis orientation of the nanorods. PL measurements showed the synthesized ZnO nanorods have strong ultraviolet (UV) emission. The electrical characterization was performed using interdigitated silver electrodes to investigate the stability in the current flow of the fabricated device under different ultraviolet (UV) exposure times. It was notified that a stable current flow was observed after 60 min of UV exposure. The determination of stable current flow after UV exposure is necessary for UV-based gas sensing and optoelectronic devices.