DOI: 10.1126/science.1243879 ISSN:

The Role of Surface Oxygen in the Growth of Large Single-Crystal Graphene on Copper

Yufeng Hao, M. S. Bharathi, Lei Wang, Yuanyue Liu, Hua Chen, Shu Nie, Xiaohan Wang, Harry Chou, Cheng Tan, Babak Fallahazad, H. Ramanarayan, Carl W. Magnuson, Emanuel Tutuc, Boris I. Yakobson, Kevin F. McCarty, Yong-Wei Zhang, Philip Kim, James Hone, Luigi Colombo, Rodney S. Ruoff
  • Multidisciplinary
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Oxygen Control of Graphene Growth

The growth of graphene on copper surfaces through the decomposition of hydrocarbons such as methane can result in a wide variety of crystal domain sizes and morphologies. Hao et al. (p. 720 , published online 24 October; see the cover) found that the presence of surface oxygen could limit the number of nucleation sites and allowed centimeter-scale domains to grow through a diffusion-limited mechanism. The electrical conductivity of the graphene was comparable to that of exfoliated graphene.

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