Patent ID: 8901543

Claim:
An organic semiconductor device which has an organic semiconductor layer formed by crystallizing a compound represented by the following formula (1) from a solution of the compound: wherein X 1 , X 2 and X 3 each independently represent an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom; at least one of R 1 , R 2 , R 3 and R 4 represents a group that has both an aromatic ring to form a π-conjugated system with the skeleton to which it bonds, and a chainlike structure in which the number of the carbon atoms constituting the main chain is from 4 to 20, and the remaining ones each independently represent a hydrogen atom or a substituent; R 1 and R 2 may bond to each other to form a cyclic structure, and R 3 and R 4 may bond to each other to form a cyclic structure.