Graphene on Si(111)7×7

dc.contributor.authorOchedowski, O.
dc.contributor.authorBegall, G.
dc.contributor.authorScheuschner, N.
dc.contributor.authorEl Kharrazi, M.
dc.contributor.authorMaultzsch, Janina
dc.contributor.authorSchleberger, M.
dc.date.accessioned2022-02-09T11:25:13Z
dc.date.available2022-02-09T11:25:13Z
dc.date.issued2012-09-21
dc.date.updated2022-02-04T05:25:21Z
dc.description.abstractWe demonstrate that it is possible to mechanically exfoliate graphene under ultrahigh vacuum conditions on the atomically well defined surface of single crystalline silicon. The flakes are several hundred nanometers in lateral size and their optical contrast is very faint, in agreement with calculated data. Single-layer graphene is investigated by Raman mapping. The graphene and 2D peaks are shifted and narrowed compared to undoped graphene. With spatially resolved Kelvin probe measurements we show that this is due to p-type doping with hole densities of nh ≃ 6 × 1012 cm−2. The in vacuo preparation technique presented here should open up new possibilities to influence the properties of graphene by introducing adsorbates in a controlled way.en
dc.description.sponsorshipDFG, 130170629, SPP 1459: Grapheneen
dc.identifier.eissn1361-6528
dc.identifier.issn0957-4484
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16323
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15098
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/3.0/en
dc.subject.ddc530 Physikde
dc.subject.othergrapheneen
dc.subject.otherSi(111)7×7en
dc.subject.otherexfoliationen
dc.subject.othersingle crystalline siliconen
dc.subject.othersingle-layer grapheneen
dc.titleGraphene on Si(111)7×7en
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber405708en
dcterms.bibliographicCitation.doi10.1088/0957-4484/23/40/405708en
dcterms.bibliographicCitation.issue40en
dcterms.bibliographicCitation.journaltitleNanotechnologyen
dcterms.bibliographicCitation.originalpublishernameIOPen
dcterms.bibliographicCitation.originalpublisherplaceBristolen
dcterms.bibliographicCitation.volume23en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften>Inst. Festkörperphysikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.instituteInst. Festkörperphysikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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