▎ 摘　　要

NOVELTY - A graphene/zinc oxide-perovskite-based solar cell comprises a substrate, a cathode, an electron transmitting layer, a light active layer, a hole transmission layer and an anode, where the cathode utilizes graphite for collecting electron, and the electron transmitting layer utilizes zinc oxide for embellishing interface and blocking hole. USE - Graphene/zinc oxide-perovskite-based solar cell. ADVANTAGE - The solar cell has improved surface characteristics and increased performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for method for preparing graphene/zinc oxide-perovskite-based solar cell, which involves taking a graphene cathode substrate, placing in deionized water, acetone, anhydrous alcohol, ultrasonically cleaning for 5-15 minutes, blowing with nitrogen gun for drying, dissolving 150 mg zinc oxide powder with particle size of 5 mu m into 15 ml water into concentration of 25%, subjecting to ultrasonic vibration for 5 minutes after adding in refrigerator for 24 hours at 5 degrees C to obtain zinc oxide precursor solution with concentration of 0.125 M/l, coating graphene cathode substrate with obtained solution, spin coating product at speed of 2000-4000 revolutions/minutes for 40 seconds, heating product at 100-200 degrees C for 5-15 minutes for forming electronic transmission layer, (4) spin coating electron transmission layer with lead iodide solution, rotating at speed of 2000-4500 revolutions/minutes at 70 degrees C, annealing for 15 minutes, spin coating for 30-60 seconds, converting product to polycrystalline organolead trihalide compound (CH3NH3PbI3) light active layer, heating at 60 degrees C for 5-20 minutes, annealing for 45 minutes, spin coating for 2000-4500 revolutions/minute to form hole transmission layer, spin coating for 30-60 seconds, followed by depositing with gold metal as anode in hole transmission layer.