Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.

Abstract: A flexible organic single crystal has a plurality of columns. The plurality of columns includes a plurality of planar organic compounds arranged so that molecular planes of molecules are respectively parallel to each other. As the organic compound, an organic compound is used that has a large molecular plane and a large area overlapping on an adjacent organic compound due to an intermolecular interaction. Further, energy changes in proportion to a strain. In this structure, when force along the direction of a stack axis is exerted, an angle formed by the stack axis and the normal of the molecular plane of the organic compound changes. Thus, the single crystal obtains flexibility.

Abstract: An organic semiconductor material represented by the following general formula (1): wherein X1 to X4 each independently represent a chalcogen atom; and at least one of R1 and R2 represents a substituent for obtaining solubility, and R1 and R2 may be connected to each other to form a ring.

Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.

Abstract: An organic semiconductor device includes a channel forming region including an organic semiconductor thin film which is composed of an organic semiconductor material having an oxidation or reduction mechanism in units of two-?-electrons and a two- or three-dimensional conduction path. It is thus possible to provide an organic semiconductor device including an organic semiconductor thin film based on an organic semiconductor thin film composed of an organic semiconductor material which can be dissolved in an organic solvent at a low temperature (e.g., room temperature) and is suitable for use in a coating process.

Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.

Abstract: An organic semiconductor material represented by the following general formula (1): wherein X1 to X4 each independently represent a chalcogen atom; and at least one of R1 and R2 represents a substituent for obtaining solubility, and R1 and R2 may be connected to each other to form a ring.

Abstract: A flexible organic single crystal has a plurality of columns. The plurality of columns includes a plurality of planar organic compounds arranged so that molecular planes of molecules are respectively parallel to each other. As the organic compound, an organic compound is used that has a large molecular plane and a large area overlapping on an adjacent organic compound due to an intermolecular interaction. Further, energy changes in proportion to a strain. In this structure, when force along the direction of a stack axis is exerted, an angle formed by the stack axis and the normal of the molecular plane of the organic compound changes. Thus, the single crystal obtains flexibility.

Abstract: A flexible organic single crystal has a plurality of columns. The plurality of columns includes a plurality of planar organic compounds arranged so that molecular planes of molecules are respectively parallel to each other. As the organic compound, an organic compound is used that has a large molecular plane and a large area overlapping on an adjacent organic compound due to an intermolecular interaction. Further, energy changes in proportion to a strain. In this structure, when force along the direction of a stack axis is exerted, an angle formed by the stack axis and the normal of the molecular plane of the organic compound changes.

Abstract: A flexible organic single crystal has a plurality of columns. The plurality of columns includes a plurality of planar organic compounds arranged so that molecular planes of molecules are respectively parallel to each other. As the organic compound, an organic compound is used that has a large molecular plane and a large area overlapping on an adjacent organic compound due to an intermolecular interaction. Further, energy changes in proportion to a strain. In this structure, when force along the direction of a stack axis is exerted, an angle formed by the stack axis and the normal of the molecular plane of the organic compound changes.

Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.