| 초록 |
This poster reports a novel application of ethylene-norbornene cyclic olefin copolymers (COC) as gate dielectric layers in organic field-effect transistors (OFETs) that require thermal annealing as a strategy for improving the OFET performance and stability. The COC gate dielectric layer displays a hydrophobic surface (water contact angle = 95±1°) and high thermal stability (glass transition temperature = 181°C) without producing cross-linking. After thermal annealing, the n-type FETs with the COC gate dielectrics exhibit high atmospheric field-effect mobilities, up to 0.90 cm2V1s1 in the 20 V saturation regime and long-term stability with respect to H2O/O2 degradation, hysteresis, or sweep-stress over 120 days. By integrating the n-type FETs with p-type pentacene-based FETs in a single device, high performance organic complementary inverters that exhibit high gain (exceeding 45 in ambient air) are realized. |
