▎ 摘　　要

NOVELTY - The method involves adding a certain amount of concentrated sulfuric acid, potassium persulfate and phosphorus pentoxide, and obtaining uniformly dispersed tawny single layer oxidized graphene sheet solution. A preparation of graphene/cadmium sulfide quantum dot composite material is uniformly dispersed with cadmium acetate dehydrates in a certain volume of dimethyl sulfoxide solution based on a ratio of 1:1. One milliliter of dimethyl sulfoxide solution is added to one milligram of graphene, and the obtained product is repeatedly washed with acetone and alcohol. USE - Method for preparing graphene/cadmium sulfide quantum dot composite material of a photoelectric conversion. ADVANTAGE - The method ensures high energy conversion rate. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation illustrating a graphene/cadmium sulfide quantum dot composite material preparing method.'(Drawing includes non-English language text)'