Adsorption of Cs on Wse2 Vanderwaals Surfaces - Temperature and Sputter Effects on Growth-Properties

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dc.contributor.authorPapageorgopoulos, C. A.en
dc.contributor.authorKamaratos, M.en
dc.contributor.authorPapageorgopoulos, A.en
dc.contributor.authorSchellenberger, A.en
dc.contributor.authorHolubkrappe, E.en
dc.contributor.authorPettenkofer, C.en
dc.contributor.authorJaegermann, W.en
dc.date.accessioned2015-11-24T18:33:18Z
dc.date.available2015-11-24T18:33:18Z
dc.identifier.issn0039-6028-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16711
dc.rightsDefault Licence-
dc.subjectelectronegative elementsen
dc.subjectschottky limiten
dc.subjectmetalen
dc.subjectintercalationen
dc.subjectfacesen
dc.subjectsns2en
dc.subjectspectroscopyen
dc.subjectcoadsorptionen
dc.subjectbombardmenten
dc.subjectinterfacesen
dc.titleAdsorption of Cs on Wse2 Vanderwaals Surfaces - Temperature and Sputter Effects on Growth-Propertiesen
heal.abstractThe adsorption of Cs on cleaved and Ar+ sputtered WSe2(0001) surfaces at low temperature (LT) and room temperature (RT) has been studied by LEED and photoemission spectroscopy using synchrotron radiation (SXPS). Cesium is adsorbed in an ionic state, Cs+, at low coverages, whereas at high coverages, it forms metallic clusters. The clustering is stronger at RT than at LT. At low coverages (< 0.1 ML) strong band bending (0.4 eV) is observed which is reduced again at higher coverages. Ar+ sputtering removes preferentially most of Se from the outmost layer of WSe2, thus exposing large areas (islands) of metallic W to the surface. Cesium is mainly chemisorbed on these islands, the work function is reduced to 1.7 eV and the adsorption behavior of Cs resembles that on metallic substrates.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.secondary<Go to ISI>://A1992JL93500019-
heal.identifier.secondaryhttp://ac.els-cdn.com/003960289290803E/1-s2.0-003960289290803E-main.pdf?_tid=16f9f54e277643a5ed0c73236aa99324&acdnat=1334223697_34ea5644a105fa61234bcfc462bd5dd5-
heal.journalNameSurface Scienceen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate1992-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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