Journal
ACS NANO
Volume 5, Issue 3, Pages 1915-1920Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn102916c
Keywords
graphene; copper; scanning tunneling microscopy; density functional theory; chemical vapor deposition
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Scanning tunneling microscopy (STM) and density functional theory (DFT) calculations were used to Investigate the surface morphology and electronic structure of graphene synthesized on Cu by low temperature chemical vapor deposition (CVD). Periodic line patterns originating from the arrangements of carbon atoms on the Cu surface passivate the Interaction between metal substrate and graphene, resulting in flawless inherent graphene band structure in pristine graphene/Cu. The effective elimination of metal surface states by the passivation Is expected to contribute to the growth of monolayer graphene on Cu, which yields highly enhanced uniformity on the wafer scale, making progress toward the commercial application of graphene.
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