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Study of Ga incorporation in glassy arsenic selenides by high-resolution XPS and EXAFS

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4919947· OSTI ID:1229418
 [1];  [2];  [3];  [3];  [3];  [4];  [5]
  1. Austin Peay State Univ., Clarksville, TN (United States)
  2. Univ. de Rennes, Rennes Cedex (France); Scientific Research Company “Carat”, Lviv (Ukraine)
  3. Univ. de Rennes, Rennes Cedex (France)
  4. Univ. of Rzeszow (Poland)
  5. Lehigh Univ., Bethlehem, PA (United States)
+ Show Author Affiliations
Effect of Ga addition on the structure of vitreous As2Se3 is studied using high-resolution X-ray photoelectron spectroscopy and extended X-ray absorption fine structure techniques. The “8-N” rule is shown to be violated for Ga atoms and, possibly, for certain number of As atoms. On the contrary, Se keeps its 2-fold coordination according to “8-N” rule in the amorphous phase throughout all the compositions. Crystalline inclusions appear in the amorphous structure of the investigated glasses at Ga concentrations greater than 3 at. %. These inclusions are presumably associated with Ga2Se3 crystallites and transition phases/defects formed at the boundaries of these crystallites and host amorphous matrix. As a result, the existence of Ga–As and Se–Se bonds in the samples with higher Ga content is supported by present studies.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Marie-Curie Action
OSTI ID:
1229418
Alternate ID(s):
OSTI ID: 22415773
Report Number(s):
BNL--111494-2015-JA
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 18 Vol. 142; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Nanoscale Inhomogeneities Mapping in Ga-Modified Arsenic Selenide Glasses journal February 2017
Effect of Rare-Earth Doping on Free-Volume Nanostructure of Ga-Codoped Glassy (As/Sb)2Se3 journal March 2017
The ability of Ge x Ga 4 S 96-x chalcogenide glasses dissolving rare earth probed by x-ray photoelectron spectra analysis journal June 2019

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Amorphous materials
Chemical bonding
Crystal structure
Crystalline solids
Crystallography
Extended X-ray absorption fine structure
Molecular structure
Scanning electron microscopy
X-ray diffraction
X-ray photoelectron spectroscopy