Fanmao Liu, Ignasi Fina, Diego Gutiérrez, Greta Radaelli, Riccardo Bertacco, Josep Fontcuberta;
Adv. Electron. Mater. 2015, 1500171;
When ferroelectric semiconductors are illuminate 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.