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The effect of metallic substrates on the optical properties of monolayer MoSe2

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dc.abstract.enAtomically thin materials, like semiconducting transition metal dichalcogenides (S-TMDs), are highly sensitive to the environment. This opens up an opportunity to externally control their properties by changing their surroundings. Photoluminescence and reflectance contrast techniques are employed to investigate the effect of metallic substrates on optical properties of MoSe2 monolayer (ML). The optical spectra of MoSe2 MLs deposited on Pt, Au, Mo and Zr have distinctive metal-related lineshapes. In particular, a substantial variation in the intensity ratio and the energy separation between a negative trion and a neutral exciton is observed. It is shown that using metals as substrates affects the doping of S-TMD MLs. The explanation of the effect involves the Schottky barrier formation at the interface between the MoSe2 ML and the metallic substrates. The alignment of energy levels at the metal/semiconductor junction allows for the transfer of charge carriers between them. We argue that a proper selection of metallic substrates can be a way to inject appropriate types of carriers into the respective bands of S-TMDs.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorFaugeras, C.
dc.contributor.authorBogucki, A.
dc.contributor.authorPotemski, Marek
dc.contributor.authorBabiński, Adam
dc.contributor.authorKossacki, Piotr
dc.contributor.authorNogajewski, Karol
dc.contributor.authorMolas, Maciej
dc.contributor.authorGrzeszczyk, Magdalena
dc.date.accessioned2024-01-26T10:11:26Z
dc.date.available2024-01-26T10:11:26Z
dc.date.copyright2020-03-18
dc.date.issued2020
dc.date.openaccess0
dc.description.accesstimeAFTER_PUBLICATION
dc.description.financeŚrodki finansowe przyznane na realizację projektu w zakresie badań naukowych lub prac rozwojowych
dc.description.number1
dc.description.versionFINAL_PUBLISHED
dc.description.volume10
dc.identifier.doi10.1038/S41598-020-61673-0
dc.identifier.issn2045-2322
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/122192
dc.identifier.weblinkhttps://doi.org/10.1038/s41598-020-61673-0
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofScientific Reports
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleThe effect of metallic substrates on the optical properties of monolayer MoSe2
dc.typeJournalArticle
dspace.entity.typePublication