Title :
Large single crystals of graphene on melted copper using chemical vapour deposition
Author :
Wu, Yimin A. ; Speller, Susannah ; Creeth, G. ; Sadowski, Jaroslaw ; Allen, C.S. ; Warner, Jeffrey H.
Author_Institution :
Dept. of Mater., Univ. of Oxford, Oxford, UK
Abstract :
Summary form only given. A simple one-step method is presented for synthesizing large single crystal graphene domains on melted copper using atmospheric pressure chemical vapour deposition (CVD). This is achieved by performing the reaction above the melting point of copper (1090 °C) and using a molybdenum support to prevent balling of the copper from dewetting. By controlling the amount of hydrogen during growth, individual single crystal domains of monolayer graphene greater than 200 μm are produced, determined by electron diffraction mapping. Angular resolved photoemission spectroscopy is used to show the graphene grown on copper exhibits a linear dispersion relationship and has no sign of doping.
Keywords :
chemical vapour deposition; electron diffraction; graphene; melting point; monolayers; photoelectron spectra; C; Cu; angular resolved photoemission spectroscopy; chemical vapour deposition; copper balling; copper melting point; dewetting; electron diffraction mapping; linear dispersion relationship; melted copper; molybdenum support; monolayer graphene; simple one-step method; single crystal graphene domains; Chemical vapor deposition; Chemicals; Copper; Crystals; Diffraction; Photoelectricity;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6322121
