SrTiO3 insulator for low-voltage organic field-effect transistors

► We mainly review our recent progress on the low-voltage organic FETs using high-k insulators in this review. ► The pentacene/SrTiO3 FETs show high mobility at low operating voltages, which are comparable with a-Si counterparts. ► The FETs also show unusual time-dependent change in the mobility under ambient conditions.