Kinetic Suppression of Photoinduced Halide Migration in Wide Bandgap Perovskites via Surface Passivation

Farhad Akrami, Fangyuan Jiang, Rajiv Giridharagopal +1

In this work, we study the kinetics of photoinduced halide migration in FA${}_{0.8}$Cs${}_{0.2}$Pb(I${}_{0.8}$Br${}_{0.2}$)${}_3$ wide (~1.69 eV) bandgap perovskites and show halide migratio…