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Jichen Dong
다차원 탄소재료 연구단
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Ultrafast epitaxial growth of metre-sized single-crystal graphene on industrial Cu foil Highly Cited Paper

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Title
Ultrafast epitaxial growth of metre-sized single-crystal graphene on industrial Cu foil
Author(s)
Xiaozhi Xu; Zhihong Zhang; Jichen Dong; Ding Yi; Jingjing Niu; Muhong Wu; Li Lin; Rongkang Yin; Mingqiang Li; Jingyuan Zhou; Shaoxin Wang; Junliang Sun; Xiajie Duan; Peng Gao; Ying Jiang; Xiaosong Wu; Hailing Peng; Rodney S. Ruoff; Zongfan Liu; Dapeng Yu; Enge Wang; Feng Ding; Kaihui Liu
Publication Date
2017-08
Journal
Science Bulletin, v.62, no.15, pp.1074 - 1080
Abstract
A foundation of the modern technology that uses single-crystal silicon has been the growth of high-quality single-crystal Si ingots with diameters up to 12 inches or larger. For many applications of graphene, large-area high-quality (ideally of single-crystal) material will be enabling. Since the first growth on copper foil a decade ago, inch-sized single-crystal graphene has been achieved. We present here the growth, in 20 min, of a graphene film of (5 × 50) cm2 dimension with >99% ultra-highly oriented grains. This growth was achieved by: (1) synthesis of metre-sized single-crystal Cu(1 1 1) foil as substrate; (2) epitaxial growth of graphene islands on the Cu(1 1 1) surface; (3) seamless merging of such graphene islands into a graphene film with high single crystallinity and (4) the ultrafast growth of graphene film. These achievements were realized by a temperature-gradient-driven annealing technique to produce single-crystal Cu(1 1 1) from industrial polycrystalline Cu foil and the marvellous effects of a continuous oxygen supply from an adjacent oxide. The as-synthesized graphene film, with very few misoriented grains (if any), has a mobility up to ∼23,000 cm2 V−1 s−1 at 4 K and room temperature sheet resistance of ∼230 Ω/□. It is very likely that this approach can be scaled up to achieve exceptionally large and high-quality graphene films with single crystallinity, and thus realize various industrial-level applications at a low cost. © 2017 Science China Pres
URI
https://pr.ibs.re.kr/handle/8788114/3879
ISSN
2095-9273
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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