GRAPHENE PROCESS AND PRODUCT

摘要

A method of preparing a free or transferrable graphene sheet comprising pre-treating the surface of a polycrystalline copper substrate with a Hydrogen-containing plasma to enhance the relative proportion of (101) and (111) facets relative to (100) facets; depositing graphene onto the substrate by contacting the surface of the substrate with a plasma comprising a carbon source gas for a deposition period; and decoupling graphene from the substrate by exposing the graphene and substrate to a polar liquid to instantly decouple the graphene from the substrate to provide a free or transferrable graphene sheet. Also, a graphene structure comprising a plurality of stacked planar carbon layers, wherein at least one layer of the structure comprises integrated horizontal and vertical nanosheet portions. The graphene structure comprises a plurality of interconnected microwells.