Abstract: An apparatus is described for converting infrared radiation into electric current with a photodiode which comprises two semiconductor layers (1, 2) with a heterojunction which are each connected to an electrode (3, 4) and of which one consists of a doped inorganic semiconductor. In order to ensure advantageous detection it is proposed that the inorganic semiconductor layer (1) forms the heterojunction with an organic semiconductor layer (2) and a cooling device is associated with the two semiconductor layers (1, 2).

Abstract: A photovoltaic cell is described having a photoactive layer (4) made of two components, namely a conjugated polymer component as an electron donor and a fullerene component as an electron acceptor. In order to provide advantageous conditions, it is suggested that the two components and their mixed phases have an average largest grain size smaller than 500 nm in at least some sections of photoactive layer (4).

Abstract: A photovoltaic cell is described, having a photoactive layer (4) made of two molecular components, namely an electron donor and an electron acceptor, particularly a conjugated polymer component and a fullerene component, and having two metallic electrodes (2, 5) provided on both sides of the photoactive layer (4). In order to provide advantageous construction ratios, it is suggested that an electrically insulating transition layer (6), having a thickness of at most 5 nm, be provided between at least one electrode (5) and the photoactive layer (4).

Abstract: A photovoltaic cell is described, having a photoactive layer (4) made of two molecular components, namely an electron donor and an electron acceptor, particularly a conjugated polymer component and a fullerene component, and having two metallic electrodes (2, 6) provided on both sides of the photoactive layer (4). In order to provide advantageous construction conditions, it is suggested that an intermediate layer (5) made of a conjugated polymer, which has doping corresponding to the electrode potential and, in regard to the electron energy, has a band gap between the valence band and the conduction band of at least 1.8 eV, be provided between the photoactive layer (4) and at least one electrode (2,6).

Abstract: A photovoltaic cell is described, having a photoactive layer (4) made of two molecular components, namely an electron donor and an electron acceptor, particularly a conjugated polymer component and a fullerene component, and having two metallic electrodes (2, 5) provided on both sides of the photoactive layer (4). In order to provide advantageous construction ratios, it is suggested that an electrically insulating transition layer (6), having a thickness of at most 5 nm, be provided between at least one electrode (5) and the photoactive layer (4).

Abstract: A photovoltaic cell is described, having a photoactive layer (4) made of two molecular components, namely an electron donor and an electron acceptor, particularly a conjugated polymer component and a fullerene component, and having two metallic electrodes (2, 6) provided on both sides of the photoactive layer (4). In order to provide advantageous construction conditions, it is suggested that an intermediate layer (5) made of a conjugated polymer, which has doping corresponding to the electrode potential and, in regard to the electron energy, has a band gap between the valence band and the conduction band of at least 1.8 eV, be provided between the photoactive layer (4) and at least one electrode (2,6).