dc.contributor.author | COLEMAN, JONATHAN | en |
dc.contributor.author | DUESBERG, GEORG | en |
dc.contributor.author | MCEVOY, NIALL | en |
dc.date.accessioned | 2015-04-10T12:19:54Z | |
dc.date.available | 2015-04-10T12:19:54Z | |
dc.date.issued | 2015 | en |
dc.date.submitted | 2015 | en |
dc.identifier.citation | Cunningham, 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 - 208 | en |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/73707 | |
dc.description | PUBLISHED | en |
dc.description.abstract | We 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.sponsorship | We 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.extent | 198 | en |
dc.format.extent | 208 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Nanoscale | en |
dc.relation.ispartofseries | 7 | en |
dc.relation.ispartofseries | 1 | en |
dc.rights | Y | en |
dc.subject | thin-film networks of nanosheets | en |
dc.subject.lcsh | thin-film networks of nanosheets | en |
dc.title | Large variations in both dark- and photoconductivity in nanosheet networks as nanomaterial is varied from MoS2 to WTe2 | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/colemaj | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/duesberg | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/mcevoyni | en |
dc.identifier.rssinternalid | 102245 | en |
dc.identifier.doi | http://dx.doi.org/10.1039/c4nr04951a | en |
dc.rights.ecaccessrights | openAccess | |
dc.identifier.rssuri | http://www.scopus.com/inward/record.url?eid=2-s2.0-84919968543&partnerID=40&md5=096fd4bfbba42dfdd09bce2126a1d62b | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |