Clean and smooth transfer of high quality CVD graphene using cyclododecane

摘要

Among various graphene synthesis approaches, chemical vapor deposition of graphene on low cost copper foil shows great promise for large scale applications. Here we report on the growth and transfer of uniform and continuous large-sized thin-films composed of mono- and multi-layered graphene. The foils were grown by chemical vapor deposition (CVD) on polycrystalline copper (Cu) foils at low pressure using ethanol and were transferred onto the destination substrates using a cyclododecane supporting layer. Structural and optical characterizations indicate that the graphene films are composed of single or few layers depending on the growth conditions and exhibit low defect density. The graphene films can be transferred to arbitrary substrates with the help of a green transfer method based on an organic molecule, cyclododecane.