Preparation of graphene on Cu foils by ion implantation with negative carbon clusters*
Li Hui, Shang Yan-Xia, Zhang Zao-Di, Wang Ze-Song, Zhang Rui, Fu De-Jun
Fig.#cod#x00A0;1. Raman spectra of the graphene samples on Cu foils prepared by cluster ion implantation at 20#cod#x00A0;kV with monomer C to doses of 4#cod#x00D7;10 15 #cod#x00A0;atomscm 2 and 8#cod#x00D7;10 15 #cod#x00A0;atomscm 2 . The inset shows the scheme of the thermal process.