Fig. 7: Photovoltaic characteristics.
From: Thinning ferroelectric films for high-efficiency photovoltaics based on the Schottky barrier effect

Illuminated I–V characteristics of the PZT films (120, 180, 240, and 300 nm) in the a Pup and b Pdown states. c Time-resolved photocurrent responses of those PZT films under cyclic ON/OFF illuminations. d Schematic diagram of an equivalent circuit of the single-barrier solar cell model