title: Large-area Bernal-stacked bi-, tri-, and tetralayer graphene.
abstract: Few-layer graphene, with Bernal stacking order, is of particular interest to the graphene community because of its unique tunable electronic structure. A synthetic method to produce such large area graphene films with precise thickness from 2 to 4 layers would be ideal for chemists and physicists to explore the promising electronic applications of these materials. Here, large-area uniform Bernal-stacked bi-, tri-, and tetralayer graphene films were successfully synthesized on a Cu surface in selective growth windows, with a finely tuned total pressure and CH(4)/H(2) gas ratio. On the basis of the analyses obtained, the growth mechanism is not an independent homoexpitaxial layer-by-layer growth, but most likely a simultaneous-seeding and self-limiting process.
authors.affiliation: Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA.
authors.forename: Zhengzong
authors.initials: Z
authors.lastname: Sun
authors.forename: Abdul-Rahman O
authors.initials: AR
authors.lastname: Raji
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhu
authors.forename: Changsheng
authors.initials: C
authors.lastname: Xiang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Yan
authors.forename: Carter
authors.initials: C
authors.lastname: Kittrell
authors.forename: E L G
authors.initials: EL
authors.lastname: Samuel
authors.forename: James M
authors.initials: JM
authors.lastname: Tour
mesh_terms: D003300:Copper / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D008567:Membranes, Artificial; D006108:Graphite; D003300:Copper