Single Crystalline ZnO Nanowires by Oxidizing Granular Zinc Film

Abstract

In this work, we report an in situ synthesis method to produce ultra fine ZnO nanowires by a basic combination of thermal evaporated and thermal oxidation being used. ZnO nanowires were produced by a basic process with no catalyst, which is oxidizing granular Zn films at temperature (450–600°C). Initially, the zinc film was starting to produced by evaporated deposition in an atmosphere at ambient temperature using granulated Zn as the target. Then, annealed in an air or oxygen atmosphere, ZnO nanowires began to grow from Zn nanograins. The investigations have showed that the nanowires grow from porous Zn films and a little of oxygen gas flow was useful to the growth of nanowires. When annealed at 600°C in an oxygen atmosphere, the ZnO nanowires was obtained from annealed, which have a diameter less than 60 nm. It shows a good structural quality.

Keywords:

• Nanowires
• oxidation
• Si
• ZnO

Acknowledgments

This work was supported by FRGS Grant. Financial support from Universiti Sains Malaysia is gratefully acknowledged.