title: Ultrafast growth of single-crystal graphene assisted by a continuous oxygen supply.
abstract: Graphene has a range of unique physical properties and could be of use in the development of a variety of electronic, photonic and photovoltaic devices. For most applications, large-area high-quality graphene films are required and chemical vapour deposition (CVD) synthesis of graphene on copper surfaces has been of particular interest due to its simplicity and cost effectiveness. However, the rates of growth for graphene by CVD on copper are less than 0.4 μm s-1, and therefore the synthesis of large, single-crystal graphene domains takes at least a few hours. Here, we show that single-crystal graphene can be grown on copper foils with a growth rate of 60 μm s-1. Our high growth rate is achieved by placing the copper foil above an oxide substrate with a gap of ∼15 μm between them. The oxide substrate provides a continuous supply of oxygen to the surface of the copper catalyst during the CVD growth, which significantly lowers the energy barrier to the decomposition of the carbon feedstock and increases the growth rate. With this approach, we are able to grow single-crystal graphene domains with a lateral size of 0.3 mm in just 5 s.
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
authors: Xiaozhi
authors: X
authors: Xu
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
authors: Zhihong
authors: Z
authors: Zhang
authors: Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong, China.
authors: Lu
authors: L
authors: Qiu
authors: Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong, China.
authors: Jianing
authors: J
authors: Zhuang
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
authors: Liang
authors: L
authors: Zhang
authors: Centre for Nanochemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors: Huan
authors: H
authors: Wang
authors: Department of Physics, Wuhan University, Wuhan 430072, China.
authors: Chongnan
authors: C
authors: Liao
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
authors: Huading
authors: H
authors: Song
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
authors: Ruixi
authors: R
authors: Qiao
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Centre of Quantum Matter, Beijing 100871, China.
authors: Peng
authors: 0000-0001-9868-2115
authors: P
authors: Gao
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
authors: Zonghai
authors: Z
authors: Hu
authors: Department of Physics, Wuhan University, Wuhan 430072, China.
authors: Lei
authors: L
authors: Liao
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Centre of Quantum Matter, Beijing 100871, China.
authors: Zhimin
authors: 0000-0001-6361-9626
authors: Z
authors: Liao
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.|Collaborative Innovation Centre of Quantum Matter, Beijing 100871, China.|Department of Physics, South University of Science and Technology of China, Shenzhen 518055, China.
authors: Dapeng
authors: 0000-0002-9459-2662
authors: D
authors: Yu
authors: Collaborative Innovation Centre of Quantum Matter, Beijing 100871, China.|International Center for Quantum Materials, Peking University, Beijing 100871, China.
authors: Enge
authors: E
authors: Wang
authors: Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong, China.
authors: Feng
authors: F
authors: Ding
authors: Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.|Centre for Nanochemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.|Beijing Science and Engineering Centre for Nanocarbons, Beijing 100871, China.
authors: Hailin
authors: H
authors: Peng
authors: State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.|Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.|Centre for Nanochemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.|Collaborative Innovation Centre of Quantum Matter, Beijing 100871, China.
authors: Kaihui
authors: 0000-0002-8781-2495
authors: K
authors: Liu