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다차원 탄소재료 연구단
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Adlayer-Free Large-Area Single Crystal Graphene Grown on a Cu(111) Foil

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Title
Adlayer-Free Large-Area Single Crystal Graphene Grown on a Cu(111) Foil
Author(s)
Luo D.; Wang M.; Li Y.; Kim C.; Yu K.M.; Kim Y.; Han H.; Biswal M.; Huang M.; Kwon Y.; Goo M.; Camacho-Mojica D.C.; Shi H.; Yoo W.J.; Altman M.S.; Shin H.-J.; Ruoff R.S.
Publication Date
2019-08
Journal
ADVANCED MATERIALS, v.31, no.35, pp.1903615 -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimTo date, thousands of publications have reported chemical vapor deposition growth of “single layer” graphene, but none of them has described truly single layer graphene over large area because a fraction of the area has adlayers. It is found that the amount of subsurface carbon (leading to additional nuclei) in Cu foils directly correlates with the extent of adlayer growth. Annealing in hydrogen gas atmosphere depletes the subsurface carbon in the Cu foil. Adlayer-free single crystal and polycrystalline single layer graphene films are grown on Cu(111) and polycrystalline Cu foils containing no subsurface carbon, respectively. This single crystal graphene contains parallel, centimeter-long ≈100 nm wide “folds,” separated by 20 to 50 µm, while folds (and wrinkles) are distributed quasi-randomly in the polycrystalline graphene film. High-performance field-effect transistors are readily fabricated in the large regions between adjacent parallel folds in the adlayer-free single crystal graphene film
URI
https://pr.ibs.re.kr/handle/8788114/6453
ISSN
0935-9648
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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