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dc.contributor.authorCOLEMAN, JONATHANen
dc.contributor.authorDUESBERG, GEORGen
dc.contributor.authorMCEVOY, NIALLen
dc.date.accessioned2015-04-10T12:19:54Z
dc.date.available2015-04-10T12:19:54Z
dc.date.issued2015en
dc.date.submitted2015en
dc.identifier.citationCunningham, G. Hanlon, D. McEvoy, N. Duesberg, G.S. Coleman, J.N., Large variations in both dark- and photoconductivity in nanosheet networks as nanomaterial is varied from MoS2 to WTe2, Nanoscale, 7, 1, 2015, 198 - 208en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/73707
dc.descriptionPUBLISHEDen
dc.description.abstractWe have used solution processing techniques to fabricate thin-film networks of nanosheets of six different transition metal dichalcogenides; MoS2, MoSe2, MoTe2, WS2, WSe2 and WTe2. We have measured both the dark conductivity and the photoconductivity under broad band illumination in the intensity range from 0–1500 W m−2. The dark conductivity varied from [similar]10−6 S m−1 for MoS2 to [similar]1 S m−1 for WTe2, with an apparent exponential dependence on bandgap. All materials studied show photocurrents which rise slowly with time and depend sub-linearly on light intensity, both hallmarks of trap limited processes. Because the photoresponse depends relatively weakly on bandgap, the ratio of photo- to dark conductivity is largest for the sulphides because of their lower dark conductivities. As such, MoS2 and WS2 may be best suited to photo-detection applications. However, due to their lower bandgap and superior conductivity, WSe2 and WTe2 might prove more effective in other applications, for example in photovoltaic cells.en
dc.description.sponsorshipWe acknowledge the ERC for support via the project SEMAN- TICS. We would like to thank SFI for long-standing financial support and acknowledge additional funding from the Gra- phene Flagship (no. 604391)en
dc.format.extent198en
dc.format.extent208en
dc.language.isoenen
dc.relation.ispartofseriesNanoscaleen
dc.relation.ispartofseries7en
dc.relation.ispartofseries1en
dc.rightsYen
dc.subjectthin-film networks of nanosheetsen
dc.subject.lcshthin-film networks of nanosheetsen
dc.titleLarge variations in both dark- and photoconductivity in nanosheet networks as nanomaterial is varied from MoS2 to WTe2en
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/colemajen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/duesbergen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/mcevoynien
dc.identifier.rssinternalid102245en
dc.identifier.doihttp://dx.doi.org/10.1039/c4nr04951aen
dc.rights.ecaccessrightsopenAccess
dc.identifier.rssurihttp://www.scopus.com/inward/record.url?eid=2-s2.0-84919968543&partnerID=40&md5=096fd4bfbba42dfdd09bce2126a1d62ben


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