Triple-layer tunneling oxide strategy enabling ultra-thin poly-Si passivating contacts for high-efficiency TOPCon solar cells

Key Points

• Efficiency increases were measured at over 25% in TOPCon solar cells with the new poly-silicon design.
• Using an ultra-thin poly-silicon layer optimized the passivating contacts, enhancing energy conversion.
• Employing a triple-layer tunneling oxide strategy, multiple layers work together to reduce electron recombination.
• Results indicate possible improvements in solar power generation, fostering advancements in renewable energy solutions.