Fast, wafer-scale growth of a nanometer-thick graphite film on Ni foil and its structural analysis.
Type
ArticleKAUST Department
Physical Science and Engineering (PSE) DivisionElectron Microscopy
Material Science and Engineering Program
Date
2020-09-16Online Publication Date
2020-09-16Print Publication Date
2020-11-27Submitted Date
2020-04-28Permanent link to this record
http://hdl.handle.net/10754/664334
Metadata
Show full item recordAbstract
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/aba712Publisher
IOP PublishingJournal
NanotechnologyPubMed ID
32679579Additional Links
https://iopscience.iop.org/article/10.1088/1361-6528/aba712ae974a485f413a2113503eed53cd6c53
10.1088/1361-6528/aba712
Scopus Count
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