It is generally considered that photoinduced charge transfer in hybrid photovoltaic devices immediately results in a pair of free charge carriers due to the increased screening of electron-hole interaction by the higher dielectric constant of inorganic materials.This idea inspired extensive research and development of hybrid organic-inorganic devices where,upon illumination,excitons are created in the highly-absorbing organic material and efficiently dissociated at the interface with the inorganic counterpart of the device.However,these promising hybrid photovoltaic devices generally show very moderate performance.One possible reason for this could be the existence of bound charge pairs (BCP) at the organic-inorganic interfaces.A BCP state comprises of a positive charge localized on an organic molecule (polaron) Coulombically-attracted to an electron in the inorganic material.