▎ 摘　　要

NOVELTY - The battery has an n type sheet formed on a silicon surface of a substrate to obtain a P-type conductive layer towel layer and a n- shaped conductive substrate layer. A silicon p-n junction is formed on a p-type conductive layer by chemical vapor deposition to obtain a graphite film layer with thickness of 10 to 20nm. A graphene thin film layer and the silicon p-n junction are formed in a schottky junction to form a tandem solar cell. USE - Graphene/silicon p-n junctions solar battery for use in a solar cell. ADVANTAGE - The battery is designed such that it improves energy conversion efficiency of the solar cell. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene/silicon p-n junctions solar battery preparing method. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation of a graphene/silicon p-n junctions solar battery preparing method.