Preparation of graphene on Cu foils by ion implantation with negative carbon clusters |
Fig.#cod#x00A0;2. Raman spectra of graphene on Cu foils prepared by ion implantation with C 2 clusters to doses of 4#cod#x00D7;10 15 and 8#cod#x00D7;10 15 #cod#x00A0;atomscm 2 . The energy is 20#cod#x00A0;keV per cluster. |