Nature Communications (Feb 2016)
Ionic polarization-induced current–voltage hysteresis in CH3NH3PbX3 perovskite solar cells
Abstract
The origin of hysteresis remains an open question in lead-halide perovskite solar cells. Here, Meloni et al. investigate the causes of hysteresis using an experimental and computational approach, finding that the observed hysteresis is due to halide ion-vacancy movement in the perovskite.