Steady and Transient Photocurrent Response in BaTiO3 Films
FanmaoLiu, IgnasiFina, Diego Gutiérrez, Greta Radaelli, RiccardoBertacco, Josep Fontcuberta
Adv. Electron. Mater. 2015, 1500171 ; DOI:10.1002/aelm.201500171
When ferroelectric semiconductors are illuminated, they develop a significant photocurrent.
Here, by exploiting the competition between coexisting internal electric fields (imprint, depolarizing and Schottky), we show that both the direction of the photocurrent and its time-dependence can be selectively engineered.