Phosphonium Halides as Processing Additives and Interfacial Modifiers

5 Phosphonium Halides as Processing Additives and Interfacial Modifiers [Pg.121]

Organic halide salts have been introduced as a processing additive to modulate the growth kinetics of perovskite light-absorbing films. Phosphonium halides with bulky aromatic substituents are foimd to be the most efficient at improving perovskite film coverage and [Pg.121]

Moreover, phosphonium halides can be used as an interfacial n-dopant to improve the electrical properties of cathode contacts. Perovskite solar cells incorporating organic halides as processing additives and interfacial modifiers show significant device performance improvement. [Pg.121]