Fig. 5. (a) J–V curves of best-performance of different FAPbI3-based solar cells. Box statistical distribution of (b) open-circuit voltage (VOC), (c) short-circuit current density (JSC), (d) fill factor (FF) and (e) power conversion efficiency (PCE) for different perovskite solar cells. (f) Incident photon-to-current efficiency curves of solar cells and related integrated current densities.
