▎ 摘　　要

NOVELTY - Coating two sheets of graphene films on copper foil surface comprises e.g carrying out organic solvent spin-coating on copper foil coated graphene film, drying, cutting, dissolving in corrosion solvent to obtain corrosion solution, applying slight disturbance, so that gap between two sheets of graphene increases, separating, slowly inserting two pieces of superimposed glass sheet or silicon chip, then separating two sheets of graphene, and simultaneously transferring the two sheets of graphene film into glass sheet or silicon chip substrate, rinsing, removing organic solvent coating. USE - The coated copper foil surface is useful in field of optoelectronic devices e.g. touch screen. ADVANTAGE - The method: is simple, efficient, stable and cost is much lower compared to conventional graphene transfer. DETAILED DESCRIPTION - Coating two sheets of graphene films on copper foil surface using synchronous transfer method comprises (i) carrying out organic solvent spin-coating to the upper and lower surface of the copper foil coated graphene film, (ii) drying organic solvent spin-coated upper and lower surfaces of the copper foil coated graphene film, and then cutting copper foil coated graphene film, (iii) dissolving copper foil substrate in a corrosion solvent to obtain corrosion solution, then applying slight disturbance to the corrosion solution, so that gap between two sheets of graphene increases and then separating upper and lower sides of copper foil coated graphene film, (iv) slowly inserting two pieces of superimposed glass sheet or silicon chip into the gap between two sheets of graphene film, then separating the upper and lower two sheets of graphene, and simultaneously transferring the upper and lower two sheets of graphene film into glass sheet or silicon chip substrate, (v) rinsing well transferred graphene glass or silicon chip and then drying, and (vi) placing dried transferred graphene glass slide or silicon chip film into hot acetone solution, removing organic solvent coating, simultaneously obtain two sheets of transferred graphene sheet glass or silicon chip substrate.