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. Author manuscript; available in PMC: 2014 Nov 18.
Published in final edited form as: J Mater Chem. 2012 Jan 28;22(4):1498–1503. doi: 10.1039/C1JM14272K

Table 1.

Graphene samples synthesized at various gas flow compositions and temperatures using the APCVD system for 5 minute growth. H2 flow rate is 30 sccm and the total mixed gas flow is kept at 500 sccm. The flow rate of CH4 (500 ppm CH4 in Ar mixture) corresponds to 40, 50, and 60 sccm, respectively. Before growth, the samples are annealed at the desired temperatures for 1 h

Ar : H2 : CH4 =
430 : 30 : 40 in sccm		 Ar : H2 : CH4 =
420 : 30 : 50 in sccm		 Ar : H2 : CH4 =
410 : 30 : 60 in sccm
1030 °C G1 G2 G3
1050 °C G4 G5 G6
1070 °C G7 G8 G9