Composition, method and electronic device
View Patent ↗The electronic device includes a thin-film transistor ( 10 ) with an active layer ( 5 ) that comprises an organic semiconductor material and a carrier material that is free of charge camera. The carrier material has a conductivity below 10 −6 S/cm and is preferably electrically insulating. The thin-film transistor ( 10 ) has a mobility that is comparable to that of a transistor with an active layer that consists of an organic semiconductor material. Preferably, the organic semiconductor material is an oligomer. The composition used to apply the active layer may contain a photosensitive component. Using such a composition, the active layer can be relief-structured, thereby preventing any leakage current between neighboring transistors in the electronic device.
1. An electronic device equipped with a thin-film transistor ( 10 ) comprising a first electrode layer ( 2 ) with a source electrode ( 21 ) and a drain electrode ( 22 ), an active layer ( 5 ) comprising an organic semiconductor, an intermediate layer ( 4 ) comprising dielectric material, and a second electrode layer ( 3 ) comprising a gate electrode ( 24 ), characterized in that the active layer ( 5 ) comprises an organic carrier material that is free of charge carrier and mixed with the organic semiconductor.
2. An electronic device as claimed in claim 1 , characterized in that the active layer ( 5 ) is patterned in accordance with a desired pattern so as to form a relief structure.
3. An electronic device as claimed in claim 1 , characterized in that the organic semiconductor is an oligothiophene.
4. An electronic device as claimed in claim 1 , characterized in that the organic semiconductor is pentacene.