Enhancing Solar Cell Efficiency by Suppressing Phase Impurities through Anion-π Interactions

Researchers have discovered that anion-π interactions can suppress phase impurities in formamidinium lead iodide (FAPbI3) perovskite solar cells, improving their stability. By incorporating anion-π interactions into the perovskite structure, the researchers were able to inhibit the formation of local nanoscale phase impurities, which are known to degrade the performance of perovskite solar cells. This finding provides a new approach for enhancing the stability and efficiency of perovskite solar cells.