Growth of zinc oxide nanostructures via thermal oxidation of DC-sputtered zinc films

Authors

  • Amir Abdallah,

    1. Centre of Research Excellence in Renewable Energy, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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  • Nouar Tabet,

    Corresponding author
    1. Centre of Research Excellence in Renewable Energy, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
    2. Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
    • Centre of Research Excellence in Renewable Energy, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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  • Mohamed Dastageer,

    1. Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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  • Syed Said

    1. Centre of Research Excellence in Renewable Energy, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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Abstract

Zinc oxide (ZnO) nanostructures have been obtained by thermal oxidation of DC- sputtered Zinc film (Zn) above the melting temperature of Zinc. The zinc film is directly deposited on the glass substrate or on a ZnO layer pre-deposited on the glass by DC reactive plasma. The films were characterized by X-ray Diffraction before and after oxidation treatment. Field Emission Scanning Electron Microscopy (FE-SEM) revealed the formation of needlelike and nanostructured network. The optical properties of the obtained nanostructures were studied using UV-VIS-NIR spectrophotometer. The results showed that the presence of pre-deposited ZnO layer on the glass substrate improves significantly the transmittance of the obtained layered structure. Photoluminescence results showed the presence of a weak near band edge emission at 3.35 eV and a defect band which is much broader than that observed in pure Zinc Oxide (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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