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Title: Electronic and structural characteristics of zinc-blende wurtzite biphasic homostructure GaN nanowires

Here, we report a new biphasic crystalline wurtzite/zinc-blende homostructure in gallium nitride nanowires. Cathodoluminescence was used to quantitatively measure the wurtzite and zinc-blende band gaps. High-resolution transmission electron microscopy was used to identify distinct wurtzite and zinc-blende crystalline phases within single nanowires through the use of selected area electron diffraction, electron dispersive spectroscopy, electron energy loss spectroscopy, and fast Fourier transform techniques. A mechanism for growth is identified.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1] ;  [4]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Jet Propulsion Lab., Pasadena, CA (United States)
  3. Howard Univ., Washington, DC (United States)
  4. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Publication Date:
OSTI Identifier:
1249081
Report Number(s):
SAND--2016-1054J
Journal ID: ISSN 1530-6984; 619146
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY