| 초록 |
Organic-only dielectric films have been required for several electronic applications, particularly in organic field-effect transistors (OFETs). Here, hundreds of nanometer thick cyclic olefin copolymer (COC) films are reported as satisfactory dielectric layers for high-performance and reliable OFETs. The COC dielectric film has high glass transition temperature and low free volume which contribute to superior insulating properties with high dielectric strength. Moreover, the smooth surface morphology and low surface energy of the COC film are responsible for the formation of high crystal structures of the overlying pentacene molecules. Finally, the OFETs with the COC dielectric layers are found to exhibit moderate charge carrier mobilities with displaying low gate leakage currents and negligible hysteresis. |
