First-principles calculation of bulk photovoltaic effect in CH${}_3$NH${}_3$PbI${}_3$ and CH${}_3$NH${}_3$PbI${}_{3-x}$Cl${}_x$

Fan Zheng, Hiroyuki Takenaka, Fenggong Wang +2

Hybrid halide perovskites exhibit nearly 20% power conversion efficiency, but the origin of their high efficiency is still unknown. Here, we compute the shift current, a dominant m…