title: Synthesis and characterization of large-area graphene and graphite films on commercial Cu-Ni alloy foils.
abstract: Controlling the thickness and uniformity during growth of multilayer graphene is an important goal. Here we report the synthesis of large-area monolayer and multilayer, particularly bilayer, graphene films on Cu-Ni alloy foils by chemical vapor deposition with methane and hydrogen gas as precursors. The dependence of the initial stages of graphene growth rate on the substrate grain orientation was observed for the first time by electron backscattered diffraction and scanning electron microscopy. The thickness and quality of the graphene and graphite films obtained on such Cu-Ni alloy foils could be controlled by varying the deposition temperature and cooling rate and were studied by optical microscopy, scanning electron microscopy, atomic force microscopy, and micro-Raman imaging spectroscopy. The optical and electrical properties of the graphene and graphite films were studied as a function of thickness.
authors.affiliation: Department of Mechanical Engineering and the Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Chen
authors.forename: Weiwei
authors.initials: W
authors.lastname: Cai
authors.forename: Richard D
authors.initials: RD
authors.lastname: Piner
authors.forename: Ji Won
authors.initials: JW
authors.lastname: Suk
authors.forename: Yaping
authors.initials: Y
authors.lastname: Wu
authors.forename: Yujie
authors.initials: Y
authors.lastname: Ren
authors.forename: Junyong
authors.initials: J
authors.lastname: Kang
authors.forename: Rodney S
authors.initials: RS
authors.lastname: Ruoff