NOVELTY - An ink comprises organic semiconductor compound, inorganic semiconductor compound, organic solvent and dispersing agent. The dispersing agent is compound which has skeleton having an aromatic ring and/or heterocyclic ring, and polar group bonded with asymmetrical position of the skeleton. The dispersing agent has lowest unoccupied molecular orbital (LUMO) level lower than the LUMO level of the organic semiconductor compound. The solubility of the dispersing agent in the organic solvent is same or more than the solubility of the organic semiconductor compound in the solvent.    USE - Ink for active layer of organic solar cell (claimed).    ADVANTAGE - The organic solar cell containing the active layer formed using the ink has high energy conversion efficiency and is manufactured stably by a simple process.    DETAILED DESCRIPTION - An ink comprises organic semiconductor compound (5), inorganic semiconductor compound (6), organic solvent and dispersing agent. The dispersing agent is compound which has skeleton having an aromatic ring and/or heterocyclic ring, and polar group bonded with asymmetrical position of the skeleton. The dispersing agent has lowest unoccupied molecular orbital (LUMO) level lower than the LUMO level of the organic semiconductor compound. The solubility of the dispersing agent in the organic solvent is same or more than the solubility of the organic semiconductor compound in the solvent. The highest occupied molecular orbital (HOMO) level of the dispersing agent is higher than the HOMO level of the inorganic semiconductor compound. INDEPENDENT CLAIMS are included for the following:    (1) organic solar cell (1), which consists of active layer (3) manufactured using the ink; and    (2) manufacture of the organic solar cell, which involves coating and drying the ink and forming an active layer on the substrate having an electrode, and forming another electrode on the active layer.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the organic solar cell.    Organic solar cell (1)    Cathode (2)    Active layer (3)    Anode (4)    Organic semiconductor compound (5)    Inorganic semiconductor compound (6)