Solar Cells based on Ferroelectric Dipole Induced Built-in Electric Field

This invention discloses a new type of solar cells that utilize ferroelectric materials to generate a built-in static electric field. A semiconductor malarial sandwiched between the ferroelectric layers absorbs photons that create charge carriers (electrons and holes). The charge carriers driven by the static electric field drift towards opposite ends of the semiconductor. Consequently the charge carriers can be collected by electrode thin layers deposited between the semiconductor surface and the ferroelectric layer. The principle of the disclosed solar cells applies to almost all types at absorber materials. This invention can be directly used as photovoltaic devices for increasing energy conventional efficiency and reducing module costs.