Surface functionalization of WSe2 by F16CoPc. Issue 6 (27th December 2016)

• Record Type: Journal Article
• Authors: Rückerl, Florian; Klaproth, Tom; Schuster, Roman; Büchner, Bernd; Knupfer, Martin
• Is Part Of: Physica status solidi. Volume 254:Issue 6(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-12-27
• Subjects: charge transfer -- F16CoPc -- Interface -- PES -- WSe2; Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201600656
• Languages: English
• ISSNs: 0370-1972

Abstract

Abstract: We have investigated the electronic properties of WSe2 surfaces covered by fluorinated cobalt phthalocyanine (F16 CoPc) using photoemission spectroscopy. We show that a charge transfer occurs at this interface, which results in the creation of holes in the WSe2 surface while the Co center of the phthalocyanine is reduced to Co(I). We observe a potential change in WSe2 approaching the surface as a consequence of the induced positive charges near the surface. In addition, our data allow for a rough estimation of the induced charge density and suggest that the holes might be localized.