Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Shinshu University

Menicon Co., Ltd.

Hisao Kono

Musubu Ichikawa

Naomi Oguma

Naoki Hirata

Hyeon-Gu Jeon

Provided are a fine-particulate organic semiconductor material, a thin organic semiconductor film and an organic transistor. The fine-particulate organic semiconductor material is in a form of fine particles and is usable as an organic semiconductor material. The fine particles are fine thermotropic liquid crystal particles that undergo a phase transition into a liquid crystal state when heated to a temperature of from 50&#xb0; C. to 350&#xb0; C. The fine-particulate organic semiconductor material can easily and uniformly form the thin organic semiconductor film over a large area by a film printing process or a dispersion coating process. The thin organic semiconductor film has high electron mobility and high ON/OFF value.

Organic semiconductor particulate material, organic semiconductor thin-film, dispersion liquid for forming organic semiconductor film, method for producing organic semiconductor thin-film, and organic thin-film transistor

Provided are an organic semiconductor material, organic semiconductor thin film and organic thin-film transistor, which contain a perylene tetracarboxylic diimide derivative represented by the following formula (1): In the formula (1), Rmeans a linear or branched alkyl group having from 1 to 20 carbon atoms, Rmeans a linear or branched alkyl group having from 2 to 6 carbon atoms, Rmeans a linear or branched alkyl group having from 2 to 6 carbon atoms, Xand Xeach mean a heteroatom selected from an oxygen atom, sulfur atom or selenium atom, Y means a halogen atom or cyano group, m stands for a number of from 0 to 4, and n stands for a number of from 0 to 2. Further, the alkyl groups represented by Rand Rmay each be substituted with one or more fluorine atoms.

Organic semiconductor material, organic semiconductor thin film, and organic thin film transistor

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Tokyo, Japan

Hisao Kono