▎ 摘　　要

NOVELTY - The graphene-based heterojunction isotope battery has a radiation source (2) which is matched with a graphene heterojunction energy conversion structure (1). The graphene heterojunction energy conversion structure includes a substrate material layer (11). A back electrode (12) is arranged on the back of the substrate material layer. A back electrode is arranged on a substrate graphene layer (14) on a front side of the material layer forms a heterojunction between the graphene layer and the substrate material layer. A side of the substrate material layer is connected to the graphene layer and is formed to saturate a passivation insulating layer (13) of a dangling bond on the surface of the substrate material layer. USE - Graphene-based heterojunction isotope battery. ADVANTAGE - The graphene and semiconductor materials are used to form a heterojunction and the thickness of the graphene of the heterojunction metal layer is only a few nanometers, which minimizes the absorption and blocking effect of the metal layer on the source layer. The work function of graphene is relatively high. The graphene is used as an electrode material, while reducing the energy loss of the decay particles of the radioactive source. The overall energy conversion efficiency of the isotope battery is maximized. The graphene material effectively reduces the volume size of the isotope battery and achieves flexible output of different sizes of power through the combination of castellations and series-parallel methods. The isotope battery has simple structure, small volume, easy production and processing and is be combined flexibly according to different working environments and expands the application range of the device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene-based heterojunction isotope battery. Graphene heterojunction energy conversion structure (1) Radiation source (2) Substrate material layer (11) Back electrode (12) Passivation insulating layer (13) Substrate graphene layer (14)