Various measurements showed predominantly uniform monolayer graphene.
Graphene synthesis by cvd on copper substrates.
I feel that is the reason you are doing a.
Graphene is needed 1.
One alternative method that has been researched involves the creation of cvd graphene on a copper cu substrate in this example cu is used as a catalyst in the reaction.
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.
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.
However your target is to prepare the cu substrate for graphene synthesis so in this case small amount of oxygenated functional groups are beneficial.
A creative approach to the cvd synthesis of ultra large area graphene based on selective joule heating was reported by kobayashi et al.
The graphene was grown using chemical vapor deposition cvd.