Synthesis and Growth Mechanism of Catalyst-Free ZnO Nanowires Using Chemical Vapour Deposition

Nur Atiqah Binti Hamzah; Swee Yong Pung; Srimala Sreekantan; Siti Nor Qurratu Aini Binti Abd Aziz

doi:10.4028/www.scientific.net/AMR.620.320

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 620Synthesis and Growth Mechanism of Catalyst-Free...

Synthesis and Growth Mechanism of Catalyst-Free ZnO Nanowires Using Chemical Vapour Deposition

Abstract:

Zinc oxides nanowires (ZnO NWs) were successfully synthesized on bare silicon substrates using Chemical vapour deposition (CVD) method without foreign catalyst. The ZnO NWs had good crystal quality as they exhibited a strong UV emission (373 nm) corresponding to the free exciton emission and a weak green arising from defect-related emission in PL measurement. Measurement of low temperature photoluminescence spectra show a peak of free exciton and defect bound excitons. The growth of these catalyst-free ZnO NWs was governed by Vapour-Solid (VS) mechanism.

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Periodical:

Advanced Materials Research (Volume 620)

Pages:

320-324

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.620.320

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Online since:

December 2012

Authors:

Nur Atiqah Binti Hamzah, Swee Yong Pung, Srimala Sreekantan, Siti Nor Qurratu Aini Binti Abd Aziz

Keywords:

CVD, Nanowire, Photoluminescence (PL), Scanning Electron Microscope (SEM), Zinc Oxide (ZnO)

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