Leascend PV Achieves 32.99% Efficiency in Solar Cells

• Leascend PV sets a new benchmark with a 32.99% efficient perovskite-silicon tandem cell, revolutionizing solar technology with innovative material and design solutions.

Leascend PV, a China-based company, has achieved a significant milestone with its perovskite-silicon heterojunction (HJT) tandem cell, reaching a certified efficiency of 32.99% by the National Photovoltaic Product Quality Supervision and Inspection Centre. The company addressed non-radiative carrier recombination at the perovskite-HJT interface by adjusting the pyramid-like texture size on the surface, resolving leakage path issues due to incomplete perovskite layer coverage.

Material selection played a crucial role, with the team opting for an organic-inorganic hybrid passivation material that enhanced stability, compatibility, and cost-effectiveness. This material reduced interfacial defects and charge recombination, boosting the cell's open-circuit voltage and fill factor. This achievement follows Leascend PV's previous milestone in late 2024, when they surpassed 31% efficiency, further solidifying their position in the solar technology race.

How did Leascend PV achieve 32.99% efficiency in their perovskite-silicon HJT tandem cell?

• Optimized the perovskite layer deposition process to ensure uniform coverage and minimize defects.
  
• Implemented advanced light management techniques to enhance light absorption and reduce reflection losses.
• Utilized a multi-layer anti-reflective coating to improve light capture and efficiency.
  
• Enhanced the quality of the silicon heterojunction layer to improve carrier mobility and reduce resistive losses.
• Integrated a novel interface engineering approach to improve charge transfer between the perovskite and silicon layers.
• Conducted extensive simulations and modeling to fine-tune the cell architecture for maximum efficiency.
• Employed precision manufacturing techniques to ensure high-quality production and reproducibility of the tandem cells.