▎ 摘　　要

NOVELTY - Synthesis of graphene involves providing a substrate having catalytic surface and flowing a dilute carbon feedstock over catalytic surface of the substrate at a pressure equal to atmospheric pressure or lower to deposit single planar layer of graphene or thin stack of planar graphene layers being parallel to the catalytic surface of the substrate. The dilute carbon feedstock has 2-15 vol.% carbon feedstock and comprises at least one of hydrogen, helium and argon. The thin stack of planar graphene layers comprises five or lesser layers of graphene. USE - Synthesis of graphene used for organic photovoltaic cells, optoelectronic device, transistors, ratio frequency transistors, amplifiers and circuits. ADVANTAGE - The method enables synthesis of graphene with improved conductivity, stability, low cost, yield a continuous film, electrode/organic film compatibility and flexibility. DETAILED DESCRIPTION - Synthesis of graphene involves providing a substrate having a catalytic surface and flowing a dilute carbon feedstock over the catalytic surface of the substrate at a pressure equal to atmospheric pressure or lower to deposit a single planar layer of graphene or thin stack of planar graphene layers being parallel to the catalytic surface of the substrate. The dilute carbon feedstock has 2-15 vol.% carbon feed stock and comprises at least one of hydrogen, helium and argon. The thin stack of planar graphene layers comprises five or lesser layers of graphene. The single planar layer of graphene or thin stack of planar graphene layers when arranged on a polyethylene terephthalate (PET) substrate has a conductance that is unperturbed after complete bending cycles. The graphene is synthesized without the use of plasma discharge. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of system for performing full-wafer scale deposition of graphene layers on polycrystalline nickel by chemical vapor deposition. System (100)