Figure 4.

Raman spectra of graphene films that were transferred from copper foil to the SiO2/Si substrate. Samples were synthesized at 600°C by plasma-assisted thermal CVD using various H2 flow rates from 5 to 20 sccm for 5 min.

Chan et al. Nanoscale Research Letters 2013 8:285   doi:10.1186/1556-276X-8-285
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