Patent ID: 7514710

Claim:
A transistor comprising: a substrate; a gate electrode; a semiconductor layer not located between the substrate and the gate electrode; a source electrode in contact with the semiconducting material; a drain electrode in contact with the semiconducting material; and a dielectric material in contact with the gate electrode and the semiconducting material; wherein the semiconductor layer comprises a semiconducting material mixture comprising: (a) 1-99.9% by weight of a polymer having a dielectric constant at 1 kHz of greater than 3.3; (b) 0.1-99% by weight of a compound according to Formula I: where each R 1 is independently selected from H and CH 3 and each R 2 is independently selected from branched or unbranched C2-C18 alkanes, branched or unbranched C1-C18 alkyl alcohols, branched or unbranched C2-C18 alkenes, C4-C8 aryls or heteroaryls, C5-C32 alkylaryl or alkyl-heteroaryl, a ferrocenyl, or SiR 3 3 where each R 3 is independently selected from hydrogen, branched or unbranched C1-C10 alkanes, branched or unbranched C1-C10 alkyl alcohols or branched or unbranched C2-C10 alkenes.