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dc.contributor.authorShi, Zhiming
dc.contributor.authorZhang, Qingyun
dc.contributor.authorSchwingenschlögl, Udo
dc.date.accessioned2018-05-14T13:37:05Z
dc.date.available2018-05-14T13:37:05Z
dc.date.issued2018-04-26
dc.identifier.citationShi Z, Zhang Q, Schwingenschlögl U (2018) Alloying as a Route to Monolayer Transition Metal Dichalcogenides with Improved Optoelectronic Performance: Mo(S1–xSex)2 and Mo1–yWyS2. ACS Applied Energy Materials. Available: http://dx.doi.org/10.1021/acsaem.8b00288.
dc.identifier.issn2574-0962
dc.identifier.issn2574-0962
dc.identifier.doi10.1021/acsaem.8b00288
dc.identifier.urihttp://hdl.handle.net/10754/627839
dc.description.abstractOn the basis of first-principles and cluster expansion calculations, we propose an effective approach to realize monolayer transition metal dichalcogenides with sizable band gaps and improved optoelectronic performance. We show that monolayer Mo(S1–xSex)2 and Mo1–yWyS2 with x = 1/3, 2/3 and y = 1/3, 1/2, 2/3 are stable according to phonon calculations and realize 1T′ or 1T″ phases. The transition barriers from the 2H phase are lower than for monolayer MoS2, implying that the 1T′ or 1T″ phases can be achieved experimentally. Furthermore, it turns out that the 1T″ monolayer alloys with x = 1/3, 2/3 and y = 1/3, 2/3 are semiconductors with band gaps larger than 1 eV, due to trimerization. The visible light absorption and carrier mobility are strongly improved as compared to 2H monolayer MoS2, MoSe2, and WS2. Thus, the 1T″ monolayer alloys have the potential to expand the applications of transition metal dichalcogenides, for example, in solar cells.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsaem.8b00288
dc.subjectband gap
dc.subjectlight absorption
dc.subjectmonolayer
dc.subjecttransition metal dichalcogenide
dc.subjecttrimerization
dc.titleAlloying as a Route to Monolayer Transition Metal Dichalcogenides with Improved Optoelectronic Performance: Mo(S1–xSex)2 and Mo1–yWyS2
dc.typeArticle
dc.contributor.departmentComputational Physics and Materials Science (CPMS)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Applied Energy Materials
kaust.personShi, Zhiming
kaust.personZhang, Qingyun
kaust.personSchwingenschlögl, Udo
dc.date.published-online2018-04-26
dc.date.published-print2018-05-29


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