fig4
Figure 4. (A) Orientation of the dipole moments in each TiO6 polyhedron of KTA. The direction of the net dipole moment is indicated by the red arrow. (B) Photocurrent response along the X-axis under a negative bias. (C) Photocurrent response along the Y-axis under a negative bias. (D) Photocurrent response along the Z-axis under a negative bias.
