▎ 摘　　要

NOVELTY - This utility new type claims a graphene thin film of one preparation device, comprise working cavity, the working cavity is set with carbon source entrance, residual gas exit the inner working cavity is set with a substrate, a screening electric field pole plate, first screening electric field electrode, second lower screening electric field electrode, accelerating a electric field polar plate, accelerating electric field pole plate, accelerating electric field electrode first, second accelerating electric field electrode, a heating plate move, first and second screening electric field electrode a and the electric field a screening plate connecting the first and second accelerating electric field electrode a. the two side residual gas exit of, first, second accelerating electric field electrode a and the accelerating electric field lower connecting plate, the substrate is placed in a heating plate move up, move a heating plate in accelerating electric field lower plate upper and lower accelerating a electric field polar plate and the accelerating electric field. This utility new type through a screening electric field, a valid the carbon ion and other anion separating, removing the graphite mass of other anion of interference.