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Microwave-assisted synthesis of c-axis oriented ZnO nanorods on a glass substrate coated with ZnO film

Published online by Cambridge University Press:  01 February 2011

Ken-ichi Ogata ,
Kazuto Koike ,
Shigehiko Sasa ,
Masataka Inoue  and
Mitsuaki Yano
Ken-ichi Ogata
Affiliation:
k-ogata@rsh.oit.ac.jp, Osaka Institute of Technology, Nanomaterials Microdevices Research Center, 5-16-1 Ohmiya, Asahi-ku, Osaka, 535-8585, Japan
Kazuto Koike
Affiliation:
koike@elc.oit.ac.jp, Osaka Institute of Technology, Nanomaterials Microdevices Research Center,, Osaka, 535-8585, Japan
Shigehiko Sasa
Affiliation:
sasa@ee.oit.ac.jp, Osaka Institute of Technology, Nanomaterials Microdevices Research Center,, Osaka, 535-8585, Japan
Masataka Inoue
Affiliation:
mt-inoue@ee.oit.ac.jp, Osaka Institute of Technology, Nanomaterials Microdevices Research Center,, Osaka, 535-8585, Japan
Mitsuaki Yano
Affiliation:
yano@elc.oit.ac.jp, Osaka Institute of Technology, Nanomaterials Microdevices Research Center,, Osaka, 535-8585, Japan
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Abstract

ZnO nanorods synthesis on a glass substrate coated with ZnO film was performed by means of microwave-assisted heating. Nanorod structure was dependent on the underlying ZnO films; slightly tilted nanorods about 800nm diameter were synthesized on an as-sputtered ZnO film while highly c-axis oriented ones about 100nm diameter were developed on the ZnO film after annealing. Photoluminescence spectra of the ZnO nanorods at 6K showed a badedge excitonic emission with comparable intensity to a visible defect related emission, suggesting the existence of many radiative defects which would be originated from insufficient quality of the underlying ZnO layer. Pattered photoresist layer can successfully be utilized for synthesis of the ZnO nanolods in selective area.

Keywords

nanostructuremicrowave heatingsolution deposition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1035: Symposium L – Zinc Oxide and Related Materials–2007 , 2007 , 1035-L08-16
Copyright
Copyright © Materials Research Society 2008

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