▎ 摘　　要

NOVELTY - A graphene-based light-driven material is prepared by dispersing graphene oxide in organic solvent, stirring, ultrasonicating to disperse and obtain organic dispersion, transferring into high pressure solvothermal reaction vessel, sealing into autoclave, preheating in oven, performing solvothermal reaction at 180 degrees C for 12-18 hours, cooling at room temperature, taking out reaction solvent graphene material, placing into container, replacing reaction solvent with water, freeze-drying at - 60 degrees C to - 40 degrees C, and calcining at 800-1200 degrees C for 1 hour. USE - Preparation of graphene-based light-driven material for preparation of optical drive device, photodetector detection device, or light control device used for spacecraft propulsion device (all claimed). ADVANTAGE - Product has good light absorbing properties. DETAILED DESCRIPTION - A graphene-based light-driven material is prepared by dispersing graphene oxide in organic solvent, stirring, ultrasonicating to disperse and obtain organic dispersion, transferring into high pressure solvothermal reaction vessel, sealing into autoclave, preheating in oven, performing solvothermal reaction at 180 degrees C for 12-18 hours, cooling at room temperature, taking out reaction solvent graphene material, placing into container, replacing reaction solvent with water, freeze-drying at - 60 degrees C to - 40 degrees C, and calcining at 800-1200 degrees C for 1 hour with pressure of not greater than 1 Pa under presence of inert atmosphere or vacuum state. An INDEPENDENT CLAIM is included for preparation of optical drive device, photodetector detection device, or light control device which involves placing photo-driven operating material in vacuum environment at not greater than 10 Pa, placing light source in vacuum environment or increasing light transmitting window structure on device, vacuuming quartz translucent material, introducing into light-illuminating material, and detecting presence or absence of measured current signal to determine of light source intensity. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron micrograph of a graphene-based light-driven material. (Drawing includes non-English language text).