Flexible and high noise margin organic enhancement inverter using hybrid insulator

We demonstrate a high noise margin and highly flexible enhancement inverter based on the organic-inorganic hybrid insulator. Organic insulators generally show high leakage current and inorganic insulators are brittle. In this work, hybrid insulator was used in pentacene-based organic thin film transistors (OTFTs) to overcome the limitations of each single type of insulator. We report highly flexible OTFTs with reduced threshold voltage and negligible hysteresis using a poly(methyl methacrylate)/silicon nitride hybrid insulator. Using the optimized hybrid insulator, we also demonstrate an enhancement inverter which shows high noise margin with noise margin low of 2.2 V, a noise margin high of 14.1 V and gain of 2.1.