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Tailoring the visible photoluminescence of mass-produced ZnO nanowires

Liu, Jinzhang, Lee, Soonil , Ahn, YeongHwan , Park, Ji-Yong , Koh, Ken Ha , , , & , (2009) Tailoring the visible photoluminescence of mass-produced ZnO nanowires. Journal of Physics D: Applied Physics, 42(9), 095401.

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Abstract

We have grown defect-rich ZnO nanowires on a large scale by the vapour phase reaction method without using any metal catalyst and vacuum system. The defects, including zinc vacancies, oxygen interstitials and oxygen antisites, are related to the excess of oxygen in ZnO nanowires and are controllable. The nanowires having high excess of oxygen exhibit a brown-colour photoluminescence, due to the dominant emission band composed by violet, blue and green emissions. Those having more balanced Zn and O show a dominant green emission, giving rise to a green colour under UV light illumination. By O2-annealing treatment the violet luminescence after the band-edge emission UV peak can be enhanced for as-grown nanowires. However, the green emission shows different changing trends under O2-annealing treatment, associated with the excess of oxygen in the nanowires.

Impact and interest:

12 citations in Scopus
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13 citations in Web of Science®

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ID Code: 46053
Item Type: Journal Article
Keywords: ZnO, Nanowires, Photoluminescence, Vapor-phase synthesis, Crystal defects
DOI: 10.1088/0022-3727/42/9/095401
ISSN: 0022-3727
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500) > Optical Physics not elsewhere classified (020599)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200) > Solid State Chemistry (030206)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Compound Semiconductors (091203)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Functional Materials (091205)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2009 Institute of Physics (IOP) Publishing
Deposited On: 20 Sep 2011 08:51
Last Modified: 20 Sep 2011 08:51

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