Figure 3

P–E hysteresis loops of the PLZT photodiodes with different bottom electrodes, Pt, Ag and Pt.
Insert: Illustration of the cross-section of a ferroelectric bulk capacitor.
P–E hysteresis loops of the PLZT photodiodes with different bottom electrodes, Pt, Ag and Pt.
Insert: Illustration of the cross-section of a ferroelectric bulk capacitor.