Graetzel, MichaelPlass, RobertBach, Udo2015-09-222015-09-222015-09-222005https://infoscience.epfl.ch/handle/20.500.14299/118477A solid state p-n heterojunction comprising an electron conductor and a hole conductor it further comprises a sensitising semiconductor, said sensitizing semiconductor being located at an interface between said electron conductor and said hole conductor. In particular, the sensitizing semiconductor is in form of quantum-dots. A solid state sensitized photovoltaic cell comprises such a layered heterojunction between two electrodes.patentJP2014042082US7042029US6861722AU779449US2005006714JP2002111031US2002017656AU5771101EP11766468174836