▎ 摘　　要

NOVELTY - A film comprises graphene oxide and clay. USE - Film is used as oxygen-barrier film in electronic device e.g. battery, organic light-emitting device, display device, photovoltaic device, integrated circuit, pressure sensor, chemical sensor, biosensor, sunlight device and illumination device, and for coating on packing material (all claimed). ADVANTAGE - The film has excellent rigidity, flexibility, crack resistance, gas-barrier property, and oxygen-blocking ability, and is prepared by simple, economical and easy method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of film.