▎ 摘　　要

NOVELTY - Transferring graphene film comprises providing first graphene composite structure, where the first graphene composite structure comprises a substrate layer, a graphene layer, a buffer layer and a polymer layer arranged in sequence, removing the base layer of the first graphene composite structure to obtain a second graphene composite structure, transferring the second graphene composite structure to a target substrate, removing the buffer layer and the polymer layer, where the buffer layer includes borneol, and using polymer layer to provide support for the graphene layer separated from the substrate. USE - The method is useful for transferring graphene film. ADVANTAGE - The method can improve integrity and cleanliness of graphene film after transfer. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) graphene film prepared by graphene film transfer method; and (2) graphene composite structure, comprising a graphene layer, a buffer layer disposed on the graphene layer, and a polymer layer disposed on the buffer layer for providing support for the graphene layer, where the buffer layer includes borneol.