Defect passivation a multifunctional organic additive toward efficient and stable inverted perovskite solar cells

A multifunctional group molecule, namely MATC, was first introduced into a Cs/FA-based perovskite used as an additive. An impressive PCE of 21.51% was achieved for the inverted PSCs with reduced defect states and improved perovskite film quality. Moreover, MATC passivation considerably enhanced the stability of the PSC devices. Efficient and stable Cs/FA-based inverted PSCs were developed by introducing a multifunctional group molecule as the additive for defect passivation.