With the development of novel donor/acceptor, the power conversion efficiency (PCE) of organic photovoltaics (OPVs) has exceeded 20 %. However, the photodegradation of donor/acceptor and the nanoscale morphological changes of the active layer induced by ultraviolet (UV) light result in the poor photo-stability of OPVs, which hinders their further commercialization process. Here, we successfully developed a UV absorption interlayer by incorporating TiO2 into a typical high-performance hole transport layer (HTL) poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), to enhance the p...
