Characterization and field emission properties of ZnMgO nanowires fabricated by thermal evaporation process

Yousefi, R. and Sheini, F.J. and Muhamad, M.R. and More, M.A. (2010) Characterization and field emission properties of ZnMgO nanowires fabricated by thermal evaporation process. Solid State Sciences, 12 (7). pp. 1088-1093.

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Abstract

In this paper, we in vestigate the roles of gold catalyst using modified thermal evaporation set-up in the growth process of ZnMgO nanowires. ZnMgO nanowires are fabricated on silicon substrates using different thickness of gold catalyst. A simple horizontal double-tube system along with chemical vapor diffusion of the precursors, based on Fick's first law, is used to grow the ZnMgO nanowires. Field emission scanning electron microscopy images show that the ZnMgO nanowires are tapered. The optical properties of the ZnMgO nanowires are characterized by room temperature photoluminescence (PL) measurements. The PL studies demonstrate that the ZnMgO nanowires grown using this method have good crystallinity with excellent optical properties and have a larger band-gap in comparison to the pure ZnO nanowires. Field emission characterization shows that the turn-on field for the nanowires grown on the thinner gold film is lower than those grown on the thicker gold film. (C) 2010 Elsevier Masson SAS. All rights reserved.

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: ZnMgO nanowires; Thermal evaporation; Fick's first law; Photoluminescence; Field emission
Subjects: Q Science > Q Science (General)
Depositing User: Mr Faizal 2
Date Deposited: 06 Apr 2015 01:09
Last Modified: 06 Apr 2015 01:09
URI: http://eprints.um.edu.my/id/eprint/13209

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