▎ 摘　　要

NOVELTY - A graphene photoelectric performance improving annealing method involves preparing graphene sample. The sample is annealed in a heating device in an air environment at 200-300 degrees C for 5-120 minutes. The annealed graphene is quickly cooled to 10-30 degrees C to obtain graphene with excellent photoelectric property. USE - Annealing method for improving photoelectric performance of graphene. ADVANTAGE - The method enables improving photoelectric performance of graphene with better stability, better electric conductivity, better light transmittance, low processing cost and wide application range.