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Journal of Materials Science

, Volume 42, Issue 16, pp 6489–6493 | Cite as

An alternative approach to in situ synthesize single crystalline ZnO nanowires by oxidizing granular zinc film

  • Z. W. LiuEmail author
  • S. W. Yeo
  • C. K. Ong
Article

Abstract

ZnO nanowires were synthesized by a relatively simple process—oxidizing granular Zn films at a relatively low temperature (450–600 °C) without catalyst. The zinc film was initially fabricated by sputter deposition in an argon atmosphere at ambient temperature using Zn metal as the sputter target. After subsequent annealing in an air or oxygen atmosphere, ZnO nanowires were found to grow from individual Zn nanograins. The investigation has also showed that the nanowires preferably grow from relatively porous Zn film and a small amount of oxygen flow is beneficial to the growth of nanowires. The resultant single crystal ZnO nanowires obtained from annealing at 600 °C in an oxygen atmosphere had a mean diameter less than 50 nm and had a very good structural quality. This process provides an alternative method to produce ultra-fine ZnO nanowires standing on the substrate.

Keywords

High Resolution Transmission Electron Microscopy High Resolution Transmission Electron Microscopy Oxygen Flow High Resolution Transmission Electron Microscopy Image Zinc Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Authors thank Dr B.H. Liu from Materials Science Department and Dr H.M. Fan from Physics Department at National University of Singapore for TEM and PL measurements, respectively.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Center for Superconducting and Magnetic Materials, Department of PhysicsNational University of SingaporeSingaporeSingapore
  2. 2.School of Materials Science and EngineeringNanyang Technological UniversitySingaporeSingapore

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