Growth of 1T ' MoTe2 by thermally assisted conversion of electrodeposited tellurium films

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dc.contributor.authorMc Manus, John B.
dc.contributor.authorCunningham, Graeme
dc.contributor.authorMcEvoy, Niall
dc.contributor.authorCullen, Conor P.
dc.contributor.authorGity, Farzan
dc.contributor.authorSchmidt, Michael
dc.contributor.authorMcAteer, David
dc.contributor.authorMullarkey, Daragh
dc.contributor.authorShvets, Igor V.
dc.contributor.authorHurley, Paul K.
dc.contributor.authorHallam, Toby
dc.contributor.authorDuesberg, Georg S.
dc.contributor.funderIrish Research Councilen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2020-03-23T11:56:24Z
dc.date.available2020-03-23T11:56:24Z
dc.date.issued2018-12-05
dc.date.updated2020-03-23T11:41:00Z
dc.description.abstractMolybdenum ditelluride (MoTe2) is a transition metal dichalcogenide (TMD) which has two phases stable under ambient conditions, a semiconducting (2H) and semimetallic (1T') phase. Despite a host of interesting properties and potential applications, MoTe2 is one of the less-studied TMDs, perhaps due its relatively low abundance in nature or challenges associated with its synthesis, such as the toxicity of most precursors. In this report, we describe the fabrication of thin films of phase-pure IT' MoTe2 using predeposited molybdenum and electrodeposited tellurium layers, at the relatively low temperature of 450 C. This method allows control over film geometry and over the tellurium concentration during the conversion. The MoTe2 films are characterized by Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, atomic force microscopy, and electron microscopies. When applied as a catalyst for the hydrogen evolution reaction, the films display promising initial results. The MoTe2 films have a Tafel slope of below 70 mV dec(-1) and compare favorably with other MoTe2 catalysts reported in the literature, especially considering the inherently scalable fabrication method. The variation in electrocatalytic behavior with thickness and morphology of the films is also investigated.en
dc.description.sponsorshipIrish Research Council (IRC scholarship Project 204485, Award 13653)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMc Manus, J. B., Cunningham, G., McEvoy, N., Cullen, C. P., Gity, F., Schmidt, M., McAteer, D., Mullarkey, D., Shvets, I. V., Hurley, P. K., Hallam, T., Duesberg, G. S. (2019) 'Growth of 1T ' MoTe2 by Thermally Assisted Conversion of Electrodeposited Tellurium Films', ACS Applied Energy Materials, 2, pp. 521-530. doi: 10.1021/acsaem.8b01540en
dc.identifier.doi10.1021/acsaem.8b01540en
dc.identifier.endpage530en
dc.identifier.issn2574-0962
dc.identifier.journaltitleACS Applied Energy Materialsen
dc.identifier.startpage521en
dc.identifier.urihttps://hdl.handle.net/10468/9782
dc.identifier.volume2en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2278/IE/Advanced Materials and BioEngineering Research Centre (AMBER)/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/15/IA/3131/IE/Investigating Emerging 2D Semiconductor Technology/en
dc.relation.urihttps://pubs.acs.org/doi/10.1021/acsaem.8b01540
dc.rights© 2018 American Chemical Society. This article is made available for a limited time sponsored by ACS under the ACS Free to Read License, which permits copying and redistribution of the article for non-commercial scholarly purposes.en
dc.rights.urihttps://pubs.acs.org/page/policy/freetoread/index.htmlen
dc.subjectHydrogen evolution reactionen
dc.subjectTransition-metal dichalcogenidesen
dc.subjectVapor-deposition growthen
dc.subjectUltrathin nanosheetsen
dc.subjectLayer mote2en
dc.subjectMOS2en
dc.subjectElectrocatalysisen
dc.subjectNanosheetsen
dc.subjectMoTe2en
dc.subject1T′ phase thin-filmen
dc.subjectRaman spectroscopyen
dc.subjectElectrocatalysisen
dc.subjectHydrogen evolution reactionen
dc.titleGrowth of 1T ' MoTe2 by thermally assisted conversion of electrodeposited tellurium filmsen
dc.typeArticle (peer-reviewed)en
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