Organic semiconductor composition, photovoltaic element, photoelectric conversion device, and method of manufacturing photovoltaic element

An organic semiconductor composition including an electron donating organic semiconductor, an electron accepting organic semiconductor, a solvent and an additive having a boiling point higher than that of the solvent, wherein the additive is one or two or more compounds selected from the group consisting of compounds represented by any one of formulae (1) to (3):

• in which in formula (1), A represents any aromatic hydrocarbon group having one ring or a heteroaromatic group having one ring, n is a natural number of 2 or more, R1s are n of substituents coupled with the A at an arbitrary position, may be the same or different, and represent an alkyl group, an alkoxy group or an alkanoyl group, further, at least one among a plurality of R1s is either an alkoxy group or an alkanoyl group, plurality of R1s may be combined with one another to form a ring,
• in which in formula (2), B represents any aromatic hydrocarbon group having two rings or a heteroaromatic group having two rings, n is a natural number of 1 or more, R2s are n of substituents coupled with the B at an arbitrary position, may be the same or different, and represent an alkyl group, an alkoxy group, an alkanoyl group or a thioalkyl group, further, at least one among R2s is any one of an alkoxy group, an alkanoyl group and a thioalkyl group, a plurality of R2s may be combined with one another to form a ring, and
• in which in formula (3), C represents any aromatic hydrocarbon group having one ring or a heteroaromatic group having one ring, n is a natural number of 1 or more, R3s are n of substituents coupled with the C at an arbitrary position, may be the same or different, and represent an alkyl group, an alkoxy group, an alkanoyl group or a thioalkyl group, further, at least one among R3s is a thioalkyl group a plurality of R3s may be combined with one another to form a ring.