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Title: Nature of red luminescence in oxygen treated hydrothermally grown zinc oxide nanorods
Authors: Suranan Anantachaisilp
Siwaporn Meejoo Smith
Cuong Ton-That
Soraya Pornsuwan
Anthony R. Moon
Christian Nenstiel
Axel Hoffmann
Matthew R. Phillips
University of Technology Sydney
Mahidol University
Technical University of Berlin
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 11-Aug-2015
Citation: Journal of Luminescence. Vol.168, (2015), 20-25
Abstract: © 2015 Published by Elsevier B.V. A strong broad red luminescence (RL) peak centered at 1.69 eV (FWHM=0.57 eV) at 15 K [1.78 eV (FWHM=0.69 eV) at 300 K] is formed in ZnO nanorods hydrothermally grown at low temperature following thermal annealing at 650 °C for 30 min in an O<inf>2</inf> gas environment. The optical properties of this peak were comprehensively studied using a range of characterization techniques, including photoluminescence and cathodoluminescence spectroscopy, X-ray absorption near edge spectroscopy and electron paramagnetic resonance spectroscopy. With decreasing temperature the RL peak position red shifted and its FWHM became narrower in accordance with the configuration coordinate model. Using these results, the RL has been assigned to highly lattice coupled V<inf>Zn</inf>-related acceptor-like centers. No correlation was found between the observed red luminescence and nitrogen impurities.
ISSN: 00222313
Appears in Collections:Scopus 2011-2015

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