Passivation of Metal Surface States: Microscopic Origin for Uniform Monolayer Graphene by Low Temperature Chemical Vapor Deposition

Passivation of Metal Surface States: Microscopic Origin for Uniform Monolayer Graphene by Low Temperature Chemical Vapor Deposition

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...

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Bibliographic Details
Published in:ACS nano Vol. 5; no. 3; pp. 1915 - 1920
Main Authors: Jeon, Insu, Yang, Heejun, Lee, Sung-Hoon, Heo, Jinseong, Seo, David H, Shin, Jaikwang, Chung, U-In, Kim, Zheong Gou, Chung, Hyun-Jong, Seo, Sunae
Format: Journal Article
Language:English
Published: United States American Chemical Society 22-03-2011
Subjects:
Adsorption
Cold Temperature
Copper - chemistry
Crystallization - methods
Gases - chemistry
Graphite - chemistry
Macromolecular Substances - chemistry
Materials Testing
Microscopy, Scanning Tunneling - methods
Models, Chemical
Models, Molecular
Molecular Conformation
Nanostructures - chemistry
Nanostructures - ultrastructure
Particle Size
Surface Properties
copper
scanning tunneling microscopy
chemical vapor deposition
graphene
density functional theory
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Summary: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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content type line 23
ISSN:1936-0851
1936-086X
DOI:10.1021/nn102916c