TOPConbased

TOPConbased refers to solar cells that utilize Tunnel Oxide Passivated Contact technology. This innovative approach significantly enhances the efficiency and performance of silicon-based photovoltaic cells. The core of TOPCon technology lies in a very thin layer of tunnel oxide, typically silicon dioxide, placed between the silicon wafer and the metal contact. This oxide layer acts as a passivation layer, reducing recombination losses of charge carriers at the interface. Above the tunnel oxide, a doped polysilicon layer is deposited, which forms the selective contact. This structure allows for efficient extraction of charge carriers while blocking unwanted recombination. TOPConbased solar cells have demonstrated impressive power conversion efficiencies, often exceeding those of traditional PERC (Passivated Emitter and Rear Cell) technology. This improved efficiency translates to more electricity generated from the same surface area, making them an attractive option for both residential and large-scale solar installations. The manufacturing process for TOPCon cells is largely compatible with existing PERC production lines, facilitating their adoption by the solar industry. Research and development continue to optimize the materials and fabrication processes for TOPCon technology, aiming for even higher efficiencies and lower manufacturing costs.