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Title: Oxidation of ultrathin GaSe

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4934592· OSTI ID:22485972
; ; ;  [1]; ; ;  [2];  [3]
  1. Sandia National Laboratories, Albuquerque, New Mexico 87123 (United States)
  2. Department of Materials and Metallurgical Engineering, New Mexico Tech., Socorro, New Mexico 87801 (United States)
  3. Sandia National Laboratories, Livermore, California 94551 (United States)

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{sub 2}Se{sub 3} and amorphous Se. Photoinduced oxidation is initiated over a portion of a flake highlighting the potential for laser based patterning of two-dimensional heterostructures via selective oxidation.

OSTI ID:
22485972
Journal Information:
Applied Physics Letters, Vol. 107, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English

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  • Rodriguez, Raul D.; Müller, Susanne; Sheremet, Evgeniya
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 32, Issue 4 https://doi.org/10.1116/1.4881995
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Toward Air Stability of Thin GaSe Devices: Avoiding Environmental and Laser-Induced Degradation by Encapsulation journal October 2018
Solution‐Processed GaSe Nanoflake‐Based Films for Photoelectrochemical Water Splitting and Photoelectrochemical‐Type Photodetectors journal January 2020
Monolayer group-III monochalcogenides by oxygen functionalization: a promising class of two-dimensional topological insulators journal March 2018
Oxygen-functionalized TlTe buckled honeycomb from first-principles study journal January 2019
Prediction of high-temperature Chern insulator with half-metallic edge states in asymmetry-functionalized stanene journal January 2018
Shear-force exfoliation of indium and gallium chalcogenides for selective gas sensing applications journal January 2019
Crystal quality of two-dimensional gallium telluride and gallium selenide using Raman fingerprint journal January 2017
Strong modulation of optical properties in rippled 2D GaSe via strain engineering journal March 2019
GaSe oxidation in air: from bulk to monolayers journal September 2017
Infrared-to-violet tunable optical activity in atomic films of GaSe, InSe, and their heterostructures journal September 2018
Role of humidity in oxidation of ultrathin GaSe journal May 2019
Molecular-Beam Epitaxy of Two-Dimensional GaSe Layers on GaAs(001) and GaAs(112) Substrates: Structural and Optical Properties journal August 2019
Solution-processed GaSe nanoflake-based films for photoelectrochemical water splitting and photoelectrochemical-type photodetectors text January 2020

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