Controlling the number of layers in graphene using the growth pressure.

@article{Cho2019ControllingTN,
  title={Controlling the number of layers in graphene using the growth pressure.},
  author={Joon Hyong Cho and Seung Ryul Na and Saungeun Park and Deji Akinwande and Kenneth M. Liechti and Michael A. Cullinan},
  journal={Nanotechnology},
  year={2019},
  volume={30 23},
  pages={
          235602
        }
}
Monolayer graphene is commonly grown on Cu substrates due to the self-limiting nature of graphene synthesis by chemical vapor deposition (CVD). Consequently, the growth of multilayer graphene by CVD has proven to be relatively difficult. This study demonstrates that the number of layers in graphene synthesized on a copper substrate can be precisely set by controlling the partial pressure of hydrogen gas used in the CVD process. This study also shows that a pressure threshold exists for a… 
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