▎ 摘　　要

NOVELTY - The graphene solar cell has a substrate (1), a transparent anode (2), a first subcell (3), a graphene connection layer, a second sub cell (5), and a reflection from bottom to top. The reflective electrode (6) has a graphene connection layer having a three layer thin film structure, and includes a first connection layer of titanium dioxide, a second connection layer of graphene, and a third connection layer of molybdenum trioxide. The substrate has glass and quartz, rigid transparent substrates and polymer flexible substrates such as polyethylene terephthalate, polyethylene naphthalate, polyimide, polycarbonates and polydimethylsiloxane. The average transmittance of the substrate in the visible light band is higher than 90%. The thickness of the indium tin oxide transparent anode is 100-200 nm. The sheet resistance is less than 20 Omega . USE - Graphene solar cell. ADVANTAGE - The energy conversion efficiency of the battery is improved. The battery life is improved. The preparation method is simple. The built-in electric field of the device is increased and the collection of holes are promoted. The high temperature sintering process is avoided, reduces The influence of the preparation of the connection layer on the first sub-cell is reduced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene solar cell. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic structural diagram of a graphene solar cell. Substrate (1) Transparent anode (2) First sub-cell (3) Second sub-cell (4) Reflective electrode (6)