title: Passivation of metal surface states: microscopic origin for uniform monolayer graphene by low temperature chemical vapor deposition.
abstract: 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.
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.
authors.forename: Insu
authors.initials: I
authors.lastname: Jeon
authors.forename: Heejun
authors.initials: H
authors.lastname: Yang
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Lee
authors.forename: Jinseong
authors.initials: J
authors.lastname: Heo
authors.forename: David H
authors.initials: DH
authors.lastname: Seo
authors.forename: Jaikwang
authors.initials: J
authors.lastname: Shin
authors.forename: U-In
authors.initials: UI
authors.lastname: Chung
authors.forename: Zheong Gou
authors.initials: ZG
authors.lastname: Kim
authors.forename: Hyun-Jong
authors.initials: HJ
authors.lastname: Chung
authors.forename: Sunae
authors.initials: S
authors.lastname: Seo
mesh_terms: D000327:Adsorption; D003080:Cold Temperature; D003300:Copper / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D005740:Gases / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D016252:Microscopy, Scanning Tunneling / Q000379:methods; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D005740:Gases; D046911:Macromolecular Substances; D006108:Graphite; D003300:Copper