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  • Solid source growth of graphene with Ni–Cu catalysts: towards high quality in situ graphene on silicon

    Author(s)
    Mishra, Neeraj
    Boeckl, John
    Tadich, Anton
    Jones, Robert T
    Pigram, Paul J
    Edmonds, Mark
    Fuhrer, Michael S.
    Nichols, Barbara M
    Iacopi, Francesca
    Griffith University Author(s)
    Iacopi, Francesca
    Mishra, Neeraj
    Year published
    2017
    Metadata
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    Abstract
    We obtain a monolayer graphene on epitaxial silicon carbide on silicon substrates via solid source growth mediated by a thin Ni–Cu alloy. Raman spectroscopy consistently shows an I D/I G band ratio as low as ~0.2, indicating that the graphene obtained through this method is to-date the best quality monolayer grown on epitaxial silicon carbide films on silicon. We describe the key steps behind the graphene synthesis on the basis of extensive physical, chemical and morphological analyses. We conclude that (1) the oxidation, amorphisation and silicidation of the silicon carbide surface mediated by the Ni, (2) the liquid-phase ...
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    We obtain a monolayer graphene on epitaxial silicon carbide on silicon substrates via solid source growth mediated by a thin Ni–Cu alloy. Raman spectroscopy consistently shows an I D/I G band ratio as low as ~0.2, indicating that the graphene obtained through this method is to-date the best quality monolayer grown on epitaxial silicon carbide films on silicon. We describe the key steps behind the graphene synthesis on the basis of extensive physical, chemical and morphological analyses. We conclude that (1) the oxidation, amorphisation and silicidation of the silicon carbide surface mediated by the Ni, (2) the liquid-phase epitaxial growth of graphene as well as (3) the self-limiting graphitization provided the molten Cu catalyst, are key characteristics of this novel synthesis method.
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    Journal Title
    Journal of Physics D: Applied Physics
    Volume
    50
    Issue
    9
    DOI
    https://doi.org/10.1088/1361-6463/aa560b
    Subject
    Physical Sciences not elsewhere classified
    Physical Sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/341603
    Collection
    • Journal articles

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