Synchronizing Crystallization Enables Thermally Stable All-FA Pb-Sn Perovskites for Printable MA-Free All-Perovskite Tandem Solar Cells

Key Points

• The aim is to improve thermal stability in Pb-Sn perovskites for solar cell applications by eliminating methylammonium.
• Developed a synchronization technique for crystallization
• Created all-FA (formamidinium) perovskite layers
• Evaluated thermal stability and performance of the solar cells
• Achieved thermally stable perovskite structures
• Demonstrated improved solar cell efficiency
• Eliminated the need for volatile methylammonium