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Journal of Nanomaterials
Volume 2012 (2012), Article ID 452407, 6 pages
http://dx.doi.org/10.1155/2012/452407
Research Article

Effect of Different Seed Solutions on the Morphology and Electrooptical Properties of ZnO Nanorods

1Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, Seriab, Kangar, 01000 Perlis, Malaysia
2Nanotechnology and Catalysis Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Electronic Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
4NANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), Selangor, 40450 Shah Alam, Malaysia
5Department of Science and Technology, Campus Norrköping, Linköping University, 60174 Norrköping, Sweden

Received 18 May 2012; Revised 27 August 2012; Accepted 27 August 2012

Academic Editor: Gong Ru Lin

Copyright © 2012 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

The morphology and electrooptical properties of ZnO nanorods synthesized on monoethanolamine-based seed layer and KOH-based seed layer were compared. The seed solutions were prepared in monoethanolamine in 2-methoxyethanol and potassium hydroxide in methanol, respectively. Zinc acetate dihydrate was as a common precursor in both solutions. The nanorod-ZnOs were synthesized via the spin coating of two different seed solutions on silicon substrates followed by their hydrothermal growth. The scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence (PL), and Raman studies revealed that the ZnO nanorods obtained from monoethanolamine-based seed layer had fewer defects, better crystals, and better alignment than those realized via KOH-based seed layer. However, the current-voltage (I-V) characteristics demonstrated better conductivity of the ZnO nanorods obtained via KOH-based seed layer. The current measured in forward bias was 4 mA and 40 μA for ZnO-nanorods grown on KOH-based seed layer and monoethanolamine-based with the turn on voltage of approximately 1.5 V and 2.5 V, respectively, showing the feasibility of using both structures in optoelectric devices.