Various measurements showed predominantly uniform monolayer graphene.
Graphene synthesis by cvd on copper substrates.
Our research focused on synthesis of monolayer graphene on 25 µm thick copper cu substrates which allowed for lateral growth on the scale of many centimeters.
Since in our experimental conditions graphene was synthesized over the whole substrate surface including areas covered by copper fingers one may expect that the large area graphene film on dielectric can be obtained by removing copper fingers by a simple wet etching process.
I feel that is the reason you are doing a.
However your target is to prepare the cu substrate for graphene synthesis so in this case small amount of oxygenated functional groups are beneficial.
The graphene was grown using chemical vapor deposition cvd.
During cvd a reaction occurs between the copper substrate and the graphene that create a high level of hydrostatic compression coupling the graphene to the substrate.
As for the graphene synthesis by cvd it is beneficial to maximize the scale while maintaining the homogeneity of large area films as indicated by bae et al.
Graphene is needed 1.