▎ 摘　　要

NOVELTY - Preparation of graphene-carbon nanotube pure carbon composite film includes taking copper foil as substrate, preparing graphene thin film by atmospheric pressure chemical vapor deposition, adding carbon nanotube powder into o-dichlorobenzene, mixing, putting in ultrasonic cleaning machine, continuously ultrasonically processing to obtain carbon nanotube dispersion liquid, uniformly dispersing on graphene film by titration, placing in tubular furnace, heat treating under inert atmosphere to remove the solvent, and obtaining copper foil-graphene-carbon nanotube material. USE - Preparation of graphene-carbon nanotube pure carbon composite film used in FETs and laser fields. ADVANTAGE - The method provides graphene-carbon nanotube pure carbon composite film with light transmittance and good conductivity. DETAILED DESCRIPTION - Preparation of graphene-carbon nanotube pure carbon composite film comprises taking copper foil as substrate, preparing graphene thin film by atmospheric pressure chemical vapor deposition, adding carbon nanotube powder into o-dichlorobenzene, mixing, putting in ultrasonic cleaning machine, continuously ultrasonically processing to obtain carbon nanotube dispersion liquid, uniformly dispersing on graphene film by titration, placing in tubular furnace, heat treating under inert atmosphere to remove the solvent, obtaining copper foil-graphene-carbon nanotube material, subjecting to particle beam irradiation, etching by etching solution to remove copper foil, washing the residual etching solution with deionized water, and obtaining the product.