Article (Scientific journals)
Native defects in monolayer GaS and GaSe: Electrical properties and thermodynamic stability
Barragan-Yani, Daniel; Polfus, Jonathan M.; Wirtz, Ludger
2022In Physical Review Materials, 6 (11), p. 114002
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Keywords :
2D materials; Defects; electronic structure
Abstract :
[en] Structural, electronic, and thermodynamic properties of native defects in GaS and GaSe monolayers are investigated by means of accurate ab initio calculations. Based on their charge transition levels we assess the influence of the studied defects on the electrical properties of the monolayers. Specifically, we show that native defects do not behave as shallow dopants and their presence cannot account for the experimentally observed intrinsic doping. In addition, we predict that native defects are efficient compensation and recombination centers. Besides pointing out their detrimental nature, we also calculate the corresponding finite-temperature formation energies and provide a window of growth conditions able to reduce the concentration of all relevant native defects.
Disciplines :
Physics
Author, co-author :
Barragan-Yani, Daniel
Polfus, Jonathan M.
Wirtz, Ludger ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
External co-authors :
yes
Language :
English
Title :
Native defects in monolayer GaS and GaSe: Electrical properties and thermodynamic stability
Publication date :
2022
Journal title :
Physical Review Materials
ISSN :
2475-9953
Publisher :
American Physical Society
Volume :
6
Issue :
11
Pages :
114002
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
FnR Project :
FNR11402387 - 2d Materials Beyond Graphene, 2016 (01/04/2017-31/03/2021) - Ludger Wirtz
Available on ORBilu :
since 19 December 2022

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