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- W3155127690 abstract "Until now, many attempts have been made to dope graphene in various ways, but each method turned out to have pros and cons. In this study, to overcome the limitations of doping methods, yttrium hypocarbide (Y2C) is investigated as one prospective material to dope graphene, using density functional theory calculations. In monolayer Y2C, the anionic electrons localized away from Y atomic layers are confirmed to contribute to occupied states near the Fermi level. Next, we investigate the electronic structure of graphene in heterojunction with Y2C. Anionic electrons of Y2C occupy the empty states of graphene in graphene/Y2C heterostructure, which makes the Dirac cone of graphene located at about 1.7 eV below the Fermi level. Such charge transfer of anionic electrons to graphene and the flatness of electric cloud of anionic electrons leads to evenly n-doped graphene in graphene/Y2C heterostructure. This suggests that Y2C is a good candidate to dope graphene." @default.
- W3155127690 created "2021-04-26" @default.
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- W3155127690 date "2021-08-01" @default.
- W3155127690 modified "2023-10-18" @default.
- W3155127690 title "Electronic structure of graphene/Y2C heterostructure and related doping effect" @default.
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- W3155127690 doi "https://doi.org/10.1016/j.cap.2021.04.008" @default.
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