NOVELTY - An organic-semiconductor device (10) consists of electrode layer (18) provided on the other surface of an organic substance layer (16) containing an organic semiconductor, with one surface equipped with electrode layer (14). Electrode layer (18) is directly formed in the other surface by vapor codeposition of a highly conductive metal, and charge transport material(s) chosen from e.g. alkaline-earth metal, alkali metal, alkaline-earth metal halide, alkali metal halide, cobalt oxide, copper oxide, and molybdenum oxide.    USE - Organic-semiconductor device is used for organic electroluminescent elements and organic thin-film solar cells of bulk heterotype.    ADVANTAGE - The organic-semiconductor device has excellent performance characteristics and suppressed defects due to contact resistance. Oxidative degradation of charge transport material is restrained and deterioration of electrode layer is suppressed. The device provides solar cells having excellent power generation characteristics.    DETAILED DESCRIPTION - An organic-semiconductor device consists of electrode layer (18) provided on the other surface of an organic substance layer containing an organic semiconductor, with one surface equipped with electrode layer (14). Electrode layer (18) is directly formed in the other surface by vapor codeposition of a highly conductive metal having a volume resistivity of 3x 10-6 Omega .cm or less, and charge transport material(s) chosen from alkaline-earth metal, alkali metal, alkaline-earth metal halide, alkali metal halide, cobalt oxide, copper oxide, molybdenum oxide, nickel oxide, amine organic compound, hydrazone type organic compound, stilbene type organic compound, star burst type organic compound, and phthalocyanine type organic compound. The ratio of highly conductive metal in electrode layer (18) is increased with increasing distance from the organic material layer so that the ratio of highly conductive metal is lower than the ratio of the charge-transporting material(s) on the organic material layer side of electrode layer (18) and the ratio of the highly conductive metal is higher than the ratio of charge-transporting material(s) on the other side of electrode layer (18), the other side being opposite to the organic material layer side. An INDEPENDENT CLAIM is included for electrode film.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the organic-semiconductor device.    Organic-semiconductor device (10)    Transparent base material (12)    Electrode layers (14,18)    Organic substance layer (16)