▎ 摘　　要

NOVELTY - A graphene perovskite nanofilm preparation device comprises base installed on both upper surface ends with bottom plate and muffle furnace. The bottom plate is fixed with longitudinal support rod fixed with three rotating shafts. The rotating shaft is located on top of first clamping arm equipped with liquid dropping tube. The other two rotating shafts are installed below with sleeve ring and protective cover through second arm. The protective cover is connected and overlapped to sleeve ring. The sleeved ring is provided with rotating coating plate movably connected to rotating shaft through rotating buckle. The other end of rotating shaft is connected to rotary motor fixed on bottom plate. USE - Graphene perovskite nanofilm preparation device. ADVANTAGE - The device provides film with better mechanical properties and flatter surface. The method is continuous and has no discontinuity between laminated membrane structures providing better film continuity, which allow layered structure to have homogeneous film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene perovskite nano-thin film comprising pre-processing of carrier plate by soaking glass slide in mixture of 30% hydrogen peroxide solution and 98% sulfuric acid solution in volume ratio of 3:7 at 80-100 degrees C for 1-2 hours, wash using ion water, drying, immersing in 3-aminopropyltriethoxysilane ethanol solution for 0.5-1 hour, taking out, washing with absolute ethanol and oven-drying at 100-120 degrees C for 2-2.5 hours; graphene suspension configuration by adding graphene powder into deionized water, ultrasonic dispersing for 1-2 hours to obtain stable suspension, adding complexing agent, dispersing agent, adhesive and plasticizer into 0.1-0.15 mol/L nitrate solution, uniformly mixing, slowly mixing with graphene suspension liquid, dripping ammonia water to adjust pH value and water bath heating at 50-60 degrees C for 24-36 hours; and fixing treated glass slide on rotatable painting plate, gradually dripping graphene suspension to rotating center of slide at different rotation speed for 10-20 seconds, spreading uniformly to form spin coating film, drying naturally at room temperature and calcining in muffle furnace at 350-400 degrees C for 10-20 minutes.