▎ 摘　　要

NOVELTY - Preparing graphene single crystal film comprises laminating copper (111) single-crystal thin film/sapphire, then firstly annealing surface outside and inner surface of the copper single-crystal thin film/sapphire and then depositing on the single-crystal thin film surface under atmospheric pressure chemical vapor deposition to obtain graphene single crystal film. USE - The method is useful for preparing graphene single crystal film (claimed). ADVANTAGE - The crystal film has rough graphene properties, oxidation resistance and conductivity properties.