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Preparation and optical property of gallium zinc oxynitride powder and nanocrystals with sawtooth-like appearance

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Title: Preparation and optical property of gallium zinc oxynitride powder and nanocrystals with sawtooth-like appearance
Authors: Kamura, Atsuo Browse this author
Masubuchi, Yuji Browse this author →KAKEN DB
Motohashi, Teruki Browse this author
Kikkawa, Shinichi Browse this author
Keywords: Nanostructures
Nitrides
Crystal growth
Optical properties
Defects
Issue Date: Mar-2017
Publisher: Elsevier
Journal Title: Materials research bulletin
Volume: 87
Start Page: 130
End Page: 134
Publisher DOI: 10.1016/j.materresbull.2016.11.013
Abstract: Gallium zinc oxynitride powder and its nanocrystals were obtained by nitridation of a ZnGa2O4 precursor under NH3 flow. The nitrided powder had the chemical composition of (Ga0.75Zn0.23 square(0.02)) (N0.71O0.29), where square indicates a vacancy, and showed improved crystallinity with a decrease in cationic vacancies compared to that for pristine gallium oxynitride without zinc. Gallium zinc oxynitride nanocrystals with rod-like morphology were obtained by nitridation of the oxide precursor on a NiO pellet. The nanorod crystals were several hundred nanometers wide and several micrometers long. The nanorods had a sawtooth appearance with triangular grains aligned along the length direction of the rods. The nanocrystals with a chemical composition of Ga/Zn = 0.80/0.20 exhibited a broad cathodoluminescence emission at 2.1 eV, similar to the powder products. (C) 2016 Elsevier Ltd. All rights reserved.
Rights: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/72722
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鱒渕 友治

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