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    Fast, wafer-scale growth of a nanometer-thick graphite film on Ni foil and its structural analysis.

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    Fast_fast scale.pdf
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    Type
    Article
    Authors
    Deokar, Geetanjali cc
    Genovese, Alessandro
    Da Costa, Pedro M. F. J. cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Electron Microscopy
    Material Science and Engineering Program
    Date
    2020-09-16
    Online Publication Date
    2020-09-16
    Print Publication Date
    2020-11-27
    Submitted Date
    2020-04-28
    Permanent link to this record
    http://hdl.handle.net/10754/664334
    
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    Abstract
    The growth of graphite on polycrystalline Ni by chemical vapor deposition (CVD) and the microstructural relation of the graphitic films and the metallic substrate continues to puzzle the scientific community. Here, we report the wafer-scale growth of a nanometer-thick graphite film (~100 nm, NGF) on Ni foil via a fast-thermal CVD approach (5 min growth). Moreover, we shed light on how localized thickness variations of the NGF relate to the Ni surface topography and grain characteristics. While on a macro-scale (mm2), the NGF film looks uniform - with a few hundreds of highly ordered graphene layers (d0002 = 0.335 nm), when studied at the micro- and nano-scales, few-layer graphene sections can be identified. These are present at a density of 0.1-3% areas in 100 µm2, can be as thin as two layers, and follow an epitaxial relation with the [111] fcc-Ni planes. Throughout the 50 cm2 NGF, the sharp graphite/substrate interfaces are either composed of a couple of NiCx layers or a graphene layer. Moreover, the NGF was successfully transferred on SiO2/Si substrate by a wet chemical etching method. The as-produced NGFs could complement or offer an alternative to the mm-thick films produced from natural graphite flakes or polymer sheets.
    Citation
    Deokar, G., Genovese, A., & Costa, P. M. F. J. (2020). Fast, wafer-scale growth of a nanometer-thick graphite film on Ni foil and its structural analysis. Nanotechnology. doi:10.1088/1361-6528/aba712
    Publisher
    IOP Publishing
    Journal
    Nanotechnology
    DOI
    10.1088/1361-6528/aba712
    PubMed ID
    32679579
    Additional Links
    https://iopscience.iop.org/article/10.1088/1361-6528/aba712
    ae974a485f413a2113503eed53cd6c53
    10.1088/1361-6528/aba712
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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