Inﬂuence of strain on speciﬁc features of MoX2 (X = S, Se, Te) monolayers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43953127" target="_blank" >RIV/49777513:23640/18:43953127 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.physb.2018.05.034" target="_blank" >http://dx.doi.org/10.1016/j.physb.2018.05.034</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physb.2018.05.034" target="_blank" >10.1016/j.physb.2018.05.034</a>

Result language
angličtina
Original language name
Inﬂuence of strain on speciﬁc features of MoX2 (X = S, Se, Te) monolayers
Original language description
We employ the full-potential linearized augmented plane wave (FLAPW) method as implemented in the WIEN2k code for calculating structural, electronic, vibrational and photocatalytic properties of strained MoS2, MoSe2 and MoTe2 monolayers. Compressive strain of 1.5% for MoS2, 1% for MoSe2, and 1.5% for MoTe2, transform their band gaps from direct to indirect, while in case of tensile strain the nature of band gap remains direct. Under compressive strain size of the band gap passes through a maximum and decreases monotonically under tensile strain. A remarkable valence band splitting is found for all three compounds, which is further modiﬁed by strain. Mobility of electron are also calculated and found to be vary under strain. Photocatalytic properties show that unstrained and respective strained MoS2 and MoSe2 systems are higher than the H2O∕O2 potential, showing that H2O can be oxidized to O2, while MoTe2 fail to oxidized H2O to O2. Furthermore phonon spectra suggest that these systems are stable under both compressive and tensile strain.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/EF15_003%2F0000358" target="_blank" >EF15_003/0000358: Computational and Experimental Design of Advanced Materials with New Functionalities</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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