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Growth of Highly Oriented ZnO Nanorods by Chemical Vapor Deposition

Published online by Cambridge University Press:  15 March 2011

Sai-Chang Liu  and
Jih-Jen Wu
Sai-Chang Liu
Affiliation:
Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
Jih-Jen Wu
Affiliation:
Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
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Abstract

Highly-oriented ZnO nanorods were grown on the fused silica substrates by a thermal CVD technique using Zinc acetylacetonate (Zn(C5H7O2)2). The substrate was heated to 500°C and the vaporization temperature of Zn(C5H7O2)2 was keep at around 135°C. X-ray diffraction and TEM analyses reveal that the nanorods are preferentially oriented toward the c-axis direction. Photoluminescence (PL) and absorption measurements show a strong emission at around 380nm which corresponds to the near band-edge emission of the bulk ZnO. Moreover, the negligible green emission band in PL spectrum and the absence of E1(LO) mode of the ZnO crystal in Raman spectrum indicate a low concentration of oxygen vacancy in the highly-oriented ZnO nanorods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 703: Symposia U/V – Nanophase and Nanocomposite Materials IV , 2001 , V2.4
Copyright
Copyright © Materials Research Society 2002

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