Pb-free Sn-based bilayer perovskite heterojunctions enabling high-efficient tandem photovoltaics

Key Points

• High efficiency in tandem photovoltaics was achieved using bilayer perovskite structures.
• The Sn-based perovskite heterojunctions demonstrated significant performance improvements under various conditions.
• The evaluation utilized advanced characterization methods to assess electrical properties and efficiency.
• These findings suggest a promising direction for developing lead-free solar technologies for energy applications.