Abstract: A fused polycyclic aromatic compound represented by formula (1) is provided. In formula (1), one of R1 and R2 is a substituent group represented by general formula (2). In formula (2), n is from 0 to 2, R3 and R4 each independently represent a divalent linking group obtained by removing two hydrogen atoms from an aromatic hydrocarbon compound or a divalent linking group obtained by removing two hydrogen atoms from a 6-membered or more heterocyclic compound containing a nitrogen atom, an oxygen atom or a sulfur atom, with a plurality of R4 groups able to be the same as or different from each other when n is 2, and R5 represents a residue obtained by removing one hydrogen atom from an aromatic hydrocarbon compound or a residue obtained by removing one hydrogen atom from a 6-membered or more heterocyclic compound containing a nitrogen atom, an oxygen atom or a sulfur atom.

Abstract: The present invention includes a fused polycyclic aromatic compound represented by general formula (1), where in formula (1), one among R1 and R2 is represented by general formula (2) and represents a substituent having three to five ring structures, and the other among R1 and R2 represents a hydrogen atom, where in formula (2), n represents an integer of 0-2R. —R3 represents a divalent linking group obtained by removing two hydrogen atoms from benzene or naphthalene, R4 represents a divalent linking group obtained by removing two hydrogen atoms from an aromatic ring of an aromatic hydrocarbon, and when n is 2, a plurality of R4's may be the same as or different from each other, R5 represents an aromatic hydrocarbon group.

Abstract: The purpose of the present invention is to provide: an organic semiconductor composition suitable for preparing an organic thin film by a solution method, an organic thin film obtained by using the organic semiconductor composition, and a practical field effect transistor which uses the organic thin film. The practical field effect transistor which uses the organic thin film has small variances in mobility and a threshold value, while maintaining a high mobility. Disclosed in the present specification is an organic semiconductor composition including an organic semiconductor compound, an insulation compound, an organic solvent A, which is a good solvent for the insulation compound, and an organic solvent B, which is a poor solvent for the insulation compound and has a higher boiling point than the organic solvent A. The mass ratio a:b of the organic solvent A and the organic solvent B is 1:8 to 8:1.

Abstract: The purpose of the present invention is to provide: an organic semiconductor composition suitable for preparing an organic thin film by a solution method, an organic thin film obtained by using the organic semiconductor composition, and a practical field effect transistor which uses the organic thin film. The practical field effect transistor which uses the organic thin film has small variances in mobility and a threshold value, while maintaining a high mobility. Disclosed in the present specification is an organic semiconductor composition including an organic semiconductor compound, an insulation compound, an organic solvent A, which is a good solvent for the insulation compound, and an organic solvent B, which is a poor solvent for the insulation compound and has a higher boiling point than the organic solvent A. The mass ratio a:b of the organic solvent A and the organic solvent B is 1:8 to 8:1.