ORGANIC THIN FILM TRANSISTOR, ORGANIC SEMICONDUCTOR THIN FILM, AND ORGANIC SEMICONDUCTOR MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an organic thin film transistor having a high carrier mobility.SOLUTION: An organic thin film transistor comprises a semiconductor active layer including a compound expressed by the general formula (1-1) or (1-2). {X is a sulfur or oxygen atom. Rto Rare each a hydrogen atom or a substituent group having a length of 3.7Å or shorter. Ris a hydrogen atom, an alkyl group; an alkenyl group; an alkynyl group; an alkylthio group; an alkoxy group; an aryl group unsubstituted or substituted with an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group or an acyl group or a silyl group; or a heteroaryl group unsubstituted or substituted with an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an acyl group or a silyl group. Lis a particular divalent coupling group. Ris an alkyl group having a particular number or more carbon atoms, an oligooxyethylene group in which the number v of times an oxyethylene unit is repeated is 2 or larger, an oligosiloxane group having two or more silicon atoms, or a trialkylsilyl group.}