▎ 摘　　要

NOVELTY - The graphene has a heat conducting silicon grease (3), a ceramic substrate (2) whose upper portion is provided with a graphene PN junction (1). The PN graphene comprises left and right adjacent S ends (11) and D ends (12). The S end is a P-type graphene, and the D end is an N-type doped graphene. USE - Used as semiconductor refrigerating graphene. ADVANTAGE - The graphene: utilizes graphene pn junction semiconductor refrigerating sheet can quickly and uniformly radiate the heat; and has better refrigerating performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of a graphene PN junction. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the semiconductor refrigerating graphene. Graphene pn junction (1) Ceramic substrate (2) Heat conducting silicon grease (3) Right adjacent s end (11) D end (12)