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Title: Structural, compositional, and photoluminescence characterization of thermal chemical vapor deposition-grown Zn₃N₂ microtips

The catalytic growth of Zn₃N₂ using guided-stream thermal chemical vapor deposition has been investigated within the parameter range of acicular growth to obtain uniform microtips with a high crystalline quality. The cubic anti-bixbyite crystal structure of Zn₃N₂ microtips and its related phonon mode are revealed by X-ray diffraction and Raman spectroscopy, respectively. The surface morphologies of pure and surface-oxidized Zn₃N₂ microtips are depicted by scanning electron microscopy and show the crack formation on the surface-oxidized Zn₃N₂ microtips. The spatial element distribution map confirms the VLS growth mechanism for Zn₃N₂ microtips and reveals the depth profile of zinc, nitrogen, oxygen, and nickel elements. Photoluminescence (PL) spectra of Zn₃N₂ microtips show a sharp infrared band-to-band emission peak at 1.34 eV with a full width at half maximum of ~100 meV and a very broad oxygen-related defect band emission peak centered at ~0.85 eV.
Authors:
; ;  [1] ; ;  [2] ;  [1] ;  [3]
  1. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China)
  2. Department of Physics, Chung Yuan Christian University, Chung-Li 32023, Taiwan (China)
  3. (China)
Publication Date:
OSTI Identifier:
22305785
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHEMICAL VAPOR DEPOSITION; CRACK PROPAGATION; CRYSTAL DEFECTS; CRYSTAL GROWTH; CRYSTAL STRUCTURE; DISTRIBUTION; EV RANGE; NICKEL; NITROGEN; OXYGEN; PHONONS; PHOTOLUMINESCENCE; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; SPECTRA; STREAMS; SURFACES; X-RAY DIFFRACTION; ZINC; ZINC NITRIDES