dc.contributor.author
Dalgleish, Simon
dc.contributor.author
Reissig, Louisa
dc.contributor.author
Shuku, Yoshiaki
dc.contributor.author
Ligorio, Giovanni
dc.contributor.author
Awaga, Kunio
dc.contributor.author
List-Kratochvil, Emil J. W.
dc.date.accessioned
2019-11-18T10:43:29Z
dc.date.available
2019-11-18T10:43:29Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/25951
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-25710
dc.description.abstract
Near-infrared sensitization of monolayer MoS2 is here achieved via the covalent attachment of a novel heteroleptic nickel bis-dithiolene complex into sulfur vacancies in the MoS2 structure. Photocurrent action spectroscopy of the sensitized films reveals a discreet contribution from the sensitizer dye centred around 1300 nm (0.95 eV), well below the bandgap of MoS2 (2.1 eV), corresponding to the excitation of the monoanionic dithiolene complex. A mechanism of conductivity enhancement is proposed based on a photo-induced flattening of the corrugated energy landscape present at sulfur vacancy defect sites within the MoS2 due to a dipole change within the dye molecule upon photoexcitation. This method of sensitization might be readily extended to other functional molecules that can impart a change to the dielectric environment at the MoS2 surface under stimulation, thereby extending the breadth of detector applications for MoS2 and other transition metal dichalcogenides.
en
dc.format.extent
8 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
nanophotonics
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Potential modulations in flatland: near-infrared sensitization of MoS2 phototransistors by a solvatochromic dye directly tethered to sulfur vacancies
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
16682
dcterms.bibliographicCitation.doi
10.1038/s41598-019-53186-2
dcterms.bibliographicCitation.journaltitle
Scientific reports
dcterms.bibliographicCitation.volume
9
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41598-019-53186-2
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Experimentalphysik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2045-2322