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

Atsuo Kamura, Yuji Masubuchi, Teruki Motohashi, Shinichi Kikkawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 (Ga0.75Zn0.230.02) (N0.71O0.29), where □ 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.

Original languageEnglish
Pages (from-to)130-134
Number of pages5
JournalMaterials Research Bulletin
Volume87
DOIs
Publication statusPublished - 2017 Mar 1
Externally publishedYes

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Keywords

  • A. Nanostructures
  • A. Nitrides
  • B. Crystal growth
  • B. Optical properties
  • D. Defects

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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