Issue 7, 2014

Synthesis and characterization of graphene: influence of synthesis variables

Abstract

The optimization of graphene growth on copper foils using an atmospheric pressure chemical vapor deposition setup is reported. CH4 and H2 were used as precursor gases and Raman spectroscopy as the main graphene characterization technique. Different growth parameters, including temperature and reaction time, the molar ratio of CH4/H2 in the feed and total flow of gases during the reaction step, were studied in detail. It was shown that graphene growth was not homogeneous in the entire sample, multilayer graphene was present in most of the sample, however as the synthesis parameters were optimized, graphene gained better quality, obtaining bilayer graphene over most of the sheet in the final optimized sample. Homemade software was used to analyze the quality of the synthesised graphene, obtaining a more quality graphene according to the synthesis parameters optimized. An optimal bilayer graphene sample was prepared at the lowest growth time (10 min) and the highest synthesis temperature (1050 °C), using a CH4/H2 flow ratio and a total flow rate ratio of precursors of 7% and 60 Nml (CH4 + H4) per min respectively.

Graphical abstract: Synthesis and characterization of graphene: influence of synthesis variables

Article information

Article type
Paper
Submitted
15 Nov 2013
Accepted
04 Dec 2013
First published
04 Dec 2013

Phys. Chem. Chem. Phys., 2014,16, 2962-2970

Synthesis and characterization of graphene: influence of synthesis variables

M. P. Lavin-Lopez, J. L. Valverde, M. C. Cuevas, A. Garrido, L. Sanchez-Silva, P. Martinez and A. Romero-Izquierdo, Phys. Chem. Chem. Phys., 2014, 16, 2962 DOI: 10.1039/C3CP54832E

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