Effect of source temperature on the morphology and photoluminescence properties of ZnO nanostructures

Al-Azri, K. and Nor, R.M. and Amin, Y.M. and Al-Ruqeishi, M.S. (2010) Effect of source temperature on the morphology and photoluminescence properties of ZnO nanostructures. Applied Surface Science, 256 (20). pp. 5957-5960. ISSN 0169-4332, DOI https://doi.org/10.1016/j.apsusc.2010.03.101.

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ZnO nanostructures have been synthesized by heating a mixture of ZnO/graphite powders using the thermal evaporation and vapor transport on Si(1 0 0) substrates without any catalyst and at atmospheric argon pressure. The in. uence of the source temperature on the morphology and luminescence properties of ZnO nanostructures has been investigated. ZnO nanowires, nanoflowres and nanotetrapods have been formed upon the Si(1 0 0) substrates at different source temperatures ranging from 1100 to 1200 degrees C. Room temperature photoluminescence (PL) spectra showed increase green emission intensity as the source temperature was decreased and ZnO nanowires had the strongest intensity of UV emission compared with other nanostructures. In addition, the growth mechanism of the ZnO nanostructures is discussed based on the reaction conditions. (C) 2010 Elsevier B. V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Nanostructures Photoluminescence ZnO Atmospheric argon; Green emissions Growth mechanisms Luminescence properties Nanotetrapods Photoluminescence properties Reaction conditions Room-temperature; photoluminescence Source temperature UV emissions; Vapor transport ZnO nanostructures ZnO nanowires Argon Atmospheric movements Morphology Nanowires Thermal evaporation Zinc oxide
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: miss munirah saadom
Date Deposited: 10 Jul 2013 03:03
Last Modified: 10 Jul 2013 03:03
URI: http://eprints.um.edu.my/id/eprint/7862

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