Thin-film photovoltaic cell series structure and preparation process of thin-film photovoltaic cell series structure

A thin-film photovoltaic cell series structure, that is disposed on a display surface side of a display module, characterized in that the thin-film photovoltaic cell series structure comprises a transparent substrate, as well as a first single-junction cell and a second single-junction cell which are disposed on the transparent substrate and connected in series, wherein the first single-junction cell comprises a first front electrode, a first photovoltaic layer, and a first back electrode which are sequentially laminated and disposed on the transparent substrate, the second single-junction cell comprises a second front electrode, a second photovoltaic layer, and a second back electrode which are sequentially laminated and disposed on the transparent substrate, the first front electrode and the second back electrode are electrically connected through a metal auxiliary electrode to realize series connection of the first single-junction cell and the second single-junction cell,

• the metal auxiliary electrode comprises a first metal auxiliary electrode and a second metal auxiliary electrode,
• a total gate electrode connecting the first front electrode and the second front electrode is further formed on a periphery of the thin-film photovoltaic cell series structure, the first photovoltaic layer and the first back electrode are covered and insulated by an insulating layer, and
• the first metal auxiliary electrode is also contact-connected on the first front electrode, and the first metal auxiliary electrode leads out the first front electrode through a via hole to form a positive electrode and extends to cover the insulating layer.