Spin-split bands cause the indirect band gap of (CH${}_3$NH${}_3$)PbI${}_3$: Experimental evidence from circular photogalvanic effect

Daniel Niesner, Martin Hauck, Shreetu Shrestha +7

Long carrier lifetimes and diffusion lengths form the basis for the successful application of the organic-inorganic perovskite (CH${}_3$NH${}_3$)PbI${}_3$ in solar cells and lasers. The…