Photo-excited charge carrier lifetime enhanced by slow cation molecular dynamics in lead iodide perovskite FAPbI${}_3$

M. Hiraishi, A. Koda, H. Okabe +4

Using muon spin relaxation ($\mu$SR) measurements on formamidinium lead iodide [FAPbI${}_3$, where FA denotes HC(NH${}_2{)}_2$] we show that, among the five structurally distinct phases of…