In the present invention, a composition comprising two types of thienothiophene compounds selected from the group consisting of the compounds indicated by formulas (1) to (4) (in formulas (1) to (4), either one of R1 and R2 represents an alkyl group, an aromatic hydrocarbon group having an alkyl group or a heterocyclic group having an alkyl group, and the other represents a hydrogen atom, an aromatic hydrocarbon group, a heterocyclic group or a substituent represented by formula (5) (in formula (5), R3 represents an aromatic hydrocarbon group or a heterocyclic group)) can form an organic thin film which is homogeneous over a large area, and an organic semiconductor device including the organic thin film is capable of exhibiting high mobility.
在本发明中,一种包含两种类型的
吩噻嗪化合物的组合物,所述化合物选自由以下化合物组成的组,所述化合物由公式(1)至(4)表示(在公式(1)至(4)中,R1和R2中的一个代表烷基、含烷基的
芳香烃或含烷基的杂环基团,另一个代表
氢原子、
芳香烃基、杂环基或由公式(5)表示的取代基(在公式(5)中,R3代表
芳香烃基或杂环基)),该组合物能够形成在大面积上均一的有机薄膜,包含所述有机薄膜的有机半导体器件能够表现出高迁移率。