ACTA

Charge Transfer in 1T-TaS₂/Graphene Hybrid Structures Studied by Spatially Resolved Raman Spectroscopy

J. Rogoża^a, E.M. Łacińska^a, J. Binder^a, I. Lutsyk^b, M. Rogala^b, P. Dabrowski^b, Z. Klusek^b, P.J. Kowalczyk^b, W. Strupiński^c, R. Stępniewski^a, A. Wysmołek^a
^aFaculty of Physics, University of Warsaw, L. Pasteura 5, 02-093 Warsaw, Poland
^bFaculty of Physics and Applied Informatics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland
^cFaculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

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Graphene/1T-TaS₂ hybrid structures were measured using the Raman spectroscopy at room temperature. Spatially resolved Raman maps show that the region for which an effective graphene G band shift was observed correlates well with the tantalum disulfide flake, suggesting a change of the carrier concentration in graphene induced by 1T-TaS₂. This effect was observed only for the sample exfoliated in vacuum, which signifies the necessity of preventing tantalum disulfide from oxidation during sample preparation.

DOI:10.12693/APhysPolA.139.311
topics: Raman scattering, graphene, 1T-TaS2, hybrid structures