▎ 摘　　要

NOVELTY - Preparing a carbon material based on an organic nanofilm using thermal evaporation, comprises: depositing a liquid polymer or polymer solution containing a polymer and a solvent onto a substrate to form an organic nanofilm; stabilizing the organic nanofilm so that the carbon atoms in the organic nanofilm have a cyclic arrangement; and carbonizing the stabilized organic nanofilm to form a carbon material, where the organic nanofilm is formed from the liquid polymer or polymer solution through a thermal evaporation process. USE - The method is useful for preparing carbon material, preferably graphene and carbon nanofilm (all claimed) for electric/electronic devices, optical devices and filter devices. ADVANTAGE - The method provides the carbon material with high electron transportability, thermal conductivity, mechanical strength and flexibility in a cost-effective manner.