Ion gel gated polymer thin-film transistors

We have fabricated polymer semiconductor thin-film transistors using an ion gel (ionic liquid plus triblock copolymer) as the gate dielectric layer. The gate capacitance of the ion gel can be as large as 40 mu F/cm(2) at 10 Hz and 2 mu F/cm(2) at 1 kHz. In addition, the polarization response time of the ion gel is much faster than previously tested solid polymer electrolytes, allowing the ion gel gated transistors to operate at higher frequencies (> 100 Hz).