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A study of the growth mechanism of CVD-grown ZnO nanowires

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Abstract

ZnO nanowires were grown by CVD process using both pure Zn powder and a mixture of ZnO and graphite powders as the Zn source, and the key factors controlling nanowire growth were identified. In both processes, the partial pressure of zinc vapor determines the prevailing growth morphology and is sensitive to the growth conditions. In the case of Zn powder as the source, the predominant growth mechanism is driven by self-catalyzed growth on the Si substrate, and in the case of a mixture of ZnO and graphite used as the source, the formation of ZnO nanowires is controlled by the vapor–liquid-solid mechanism, where the gold particles serve as catalyst.

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Authors and Affiliations

  1. Department of Material Engineering and Applied Chemistry, National University of Defense Technology, Changsha, 410073, People’s Republic of China

    Hong Wan

  2. Centre of Advance Nanotechnology, Faculty of Applied Science and Engineering, University of Toronto, Toronto, M5S 3E4, Canada

    Harry E. Ruda

Authors
  1. Hong Wan
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  2. Harry E. Ruda
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Correspondence to Hong Wan.

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Wan, H., Ruda, H.E. A study of the growth mechanism of CVD-grown ZnO nanowires. J Mater Sci: Mater Electron 21, 1014–1019 (2010). https://doi.org/10.1007/s10854-010-0118-7

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  • DOI: https://doi.org/10.1007/s10854-010-0118-7

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