“…Ferroelectric semiconductor materials have ferroelectric photovoltaic effects due to the presence of an intrinsic spontaneous polarization electric field or depolarization field in the bulk, which can drive photogenerated carrier separation. In recent years, ferroelectric materials, such as KNbO 3 , Pb(Zr,Ti)O 3 , BaTiO 3 (BTO), and BiFeO 3 , , with a ferroelectric photovoltaic effect have been used in photocatalysis, PDs, and solar cells. The depolarization field generated in the ferroelectric material after applying the bias can effectively modulate the barrier height, the depletion region width, and the magnitude of the built-in electric field in ferroelectric-based PDs to improve the carrier transport characteristics. , However, the large dielectric constant and insulating nature of ferroelectric materials lead to low electron mobility and poor material conductivity.…”