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. 2018 May 10;9:1859. doi: 10.1038/s41467-018-04291-9

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — MoSe2/graphene heterostructures. a Optical image of the MoSe₂/graphene heterostructures on a CaF₂ window. The triangles are MoSe₂ below a continuous monolayer of graphene. Scale bar represents 100 µm. b Band alignment of the heterostructure. The energy levels CBM (conduction band minimum of MoSe₂), Dirac point and Fermi level of graphene, and VBM (valence band maximum of MoSe₂) in eV are listed in the order from top to bottom on the right. c Photoluminescence (PL) spectra of the MoSe₂ monolayer and MoSe₂/graphene heterostructure. PL is severely quenched in the heterostructure