▎ 摘　　要

NOVELTY - The invention claims a gallium arsenide solar battery, comprising a gallium arsenide solar battery epitaxial structure, formed on the gallium arsenide solar battery epitaxial structure surface of the graphene layer and the metal electrode, forming an electrical connection between the graphene layer and the metal electrode, composite positive electrode electrically connected to the graphene layer and the metal electrode of the gallium arsenide solar battery back electrode, forming on the gallium arsenide solar battery epitaxial structure on the back. The invention claims a gallium arsenide solar battery using graphene layer as part of positive electrode for gallium arsenide solar battery, which can effectively improve the electrode current collection ability, reduce the series resistance, but also can effectively reduce metal electrode grid line density and width, reduce the shading loss, good for gallium arsenide solar battery to obtain higher open-circuit voltage, short circuit current and photoelectric conversion efficiency.