Organic field-effect transistors with thermal-cured polyacrylate gate dielectric films

Chemically and thermally stable, durable, thermal-cured polyacrylates having a hydrophobic nature, which were prepared by mixing polyacrylate having reactive sites and functional-anhydride, exhibit good insulation properties and high breakdown voltage (> 4.0 MV/cm) as a dielectric. Plastic-based organic thin-film transistors with the thermal-acryl dielectric layer showed typical current-voltage characteristics; the field-effect mobility was calculated to be 0.22 cm2 V− 1 s− 1, while the threshold voltage was approximately − 8 V. It has been found that thin dielectric layers gave higher field-effect mobility.