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A 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.
Mohammad Khaja Nazeeruddin, Emad Oveisi