Statistically, Raman mapping at the 15μm15μm scale confirms the thickness and uniformity of graphenefilms. In a typical monolayer graphenefilm (as shown in Fig. 1(d)), more than 90% of the graphene area has anIG/I2Dratio o0.6
Statistically, Raman mapping at the15μm15μm scale confirms the thickness and uniformity ofgraphenefilms. In a typical monolayer graphenefilm (as shown inFig. 1(d)), more than 90% of the graphene area has anIG/I2Dratioo0.6