%0 Journal Article %K Domain walls %K Ferroelectric materials %K Ferroelectricity %K Ferroelectric domains %K Electrostatic potentials %K Nanoscale %K Photovoltaic effects %K Photovoltages %K Band gaps %K Charged carriers %K Diffusion currents %K Electrons and holes %K Internal quantum efficiency %K Open circuits %K Ordered domains %K Periodic domain structures %K Periodic potentials %K Photovoltaic currents %K Recombination rate %K Periodic structures %A J Seidel %A D Fu %A S.-Y Yang %A E Alarcón-Lladó %A J Wu %A Ramamoorthy Ramesh %A Joel W Ager %B Physical Review Letters %D 2011 %G eng %R 10.1103/PhysRevLett.107.126805 %T Efficient photovoltaic current generation at ferroelectric domain walls %V 107