Fig. 5: Charge carrier transport within the device.
From: Two quasi-interfacial p-n junctions observed by a dual-irradiation system in perovskite solar cells

a Schematic illustration of the mechanism of the charge carriers generation and separation within the semitransparent perovskite device under dual irradiation. b TOF spectra of a semitransparent perovskite device from both FTO and ITO irradiation. c A log plot of TPV of the perovskite device under three different irradiation conditions.