Synergistic effect of ionic liquid and methylammonium chloride in crystallization of hybrid haloplumbate for perovskite solar cells

The synergistic effect of ionic liquid 1-(2-hydroxyethyl)-3-methyl-1H-imidazol-3-ium cinnamate and methylammonium chloride (MACl) on the functional properties of mixed hybrid perovskites was discovered for the first time, which leads to a notable improvement in the quality of perovskite films and the photothermal stability of perovskite solar cells compared to reference devices.