期刊
NANO LETTERS
卷 11, 期 9, 页码 3519-3525出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl201699j
关键词
Graphene; Cu-Ni foil; bilayer graphene; grain orientation; film thickness
类别
资金
- Office of Naval Research
- National Science Foundation
- DARPA Carbon Electronics for RF Applications Center
- CSC
- National Natural Science Foundation of China [60827004, 90921002]
- 973 program [2011CB925600]
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.
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