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Title: Oxidation of ultrathin GaSe

Oxidation of exfoliated gallium selenide (GaSe) is investigated through Raman, photoluminescence, Auger, and X-ray photoelectron spectroscopies. Photoluminescence and Raman intensity reductions associated with spectral features of GaSe are shown to coincide with the emergence of signatures emanating from the by-products of the oxidation reaction, namely, Ga 2Se 3 and amorphous Se. Furthermore, photoinduced oxidation is initiated over a portion of a flake highlighting the potential for laser based patterning of two-dimensional heterostructures via selective oxidation.
Authors:
;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [3] ;  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. New Mexico Tech., Socorro, NM (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Report Number(s):
SAND-2015-5568J
Journal ID: ISSN 0003-6951; APPLAB; 594959
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 17; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories, Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; oxidation; surface oxidation; photoluminescence; X-ray photoelectron spectroscopy; atomic force microscopy
OSTI Identifier:
1236224
Alternate Identifier(s):
OSTI ID: 1224332

Thomas Edwin Beechem, McDonald, Anthony E., Ohta, Taisuke, Howell, Stephen W., Kalugin, Nikolai G., Kowalski, Brian M., Brumbach, Michael T., Spataru, Catalin D., and Pask, Jesse A.. Oxidation of ultrathin GaSe. United States: N. p., Web. doi:10.1063/1.4934592.
Thomas Edwin Beechem, McDonald, Anthony E., Ohta, Taisuke, Howell, Stephen W., Kalugin, Nikolai G., Kowalski, Brian M., Brumbach, Michael T., Spataru, Catalin D., & Pask, Jesse A.. Oxidation of ultrathin GaSe. United States. doi:10.1063/1.4934592.
Thomas Edwin Beechem, McDonald, Anthony E., Ohta, Taisuke, Howell, Stephen W., Kalugin, Nikolai G., Kowalski, Brian M., Brumbach, Michael T., Spataru, Catalin D., and Pask, Jesse A.. 2015. "Oxidation of ultrathin GaSe". United States. doi:10.1063/1.4934592. https://www.osti.gov/servlets/purl/1236224.
@article{osti_1236224,
title = {Oxidation of ultrathin GaSe},
author = {Thomas Edwin Beechem and McDonald, Anthony E. and Ohta, Taisuke and Howell, Stephen W. and Kalugin, Nikolai G. and Kowalski, Brian M. and Brumbach, Michael T. and Spataru, Catalin D. and Pask, Jesse A.},
abstractNote = {Oxidation of exfoliated gallium selenide (GaSe) is investigated through Raman, photoluminescence, Auger, and X-ray photoelectron spectroscopies. Photoluminescence and Raman intensity reductions associated with spectral features of GaSe are shown to coincide with the emergence of signatures emanating from the by-products of the oxidation reaction, namely, Ga2Se3 and amorphous Se. Furthermore, photoinduced oxidation is initiated over a portion of a flake highlighting the potential for laser based patterning of two-dimensional heterostructures via selective oxidation.},
doi = {10.1063/1.4934592},
journal = {Applied Physics Letters},
number = 17,
volume = 107,
place = {United States},
year = {2015},
month = {10}
}