Effect of a Balanced Concentration of Hydrogen on Graphene CVD Growth

Figure 6

(a) Raman spectra of graphene as growth on copper foil (red line), after transfer to glass (black line) (with thermally grown quartz on top of the glass) and in the back side of the foil (green line). After the transfer a small D peak appears in the spectra, probably a result of defects introduced during the transfer. In the spectra obtained directly in the copper foil the background noise of the copper has been removed. (b) This spectrum corresponds to graphene after the transfer on top of SiO₂/Si. The characteristics peak is also visible.

(a)

(b)