▎ 摘　　要

NOVELTY - An alloy method for preparing large area graphene thin film comprises depositing carbon alloy film on high temperature resistant substrate; high temperature annealing to alloy film, providing carbon atom concentration in alloy thin film surface and epitaxially growing graphene thin film; and reducing temperature to room temperature, optimizing graphene thin film crystallization to obtain high quality on alloy thin film surface area graphene film. USE - Alloy method for preparing large area graphene thin film. ADVANTAGE - The method is simple and easy to operate, and is suitable for industrial production.