| 초록 |
Organic thin film transistor (OTFT) has attracted much attention because of the processability, low cost, and flexibility. Sol-gel derived organic-inorganic hybrid materials (hybrimers) are potential candidates of gate insulators in OTFTs due to the solution processibility, and the easy control of their physical and chemical properties by the suitable selection of precursors and the optimization of processing parameters. In this study, we synthesized photo-patternable Ti-doped methacrylate-oligosiloxanes using simple sol-gel reaction for the gate dielectrics in OTFTs. The MDT has relatively high dielectric constants and low leakage current. The surface of MDT thin films is hydrophobic and smooth. Pentacene-based OTFTs were fabricated using the top contact geometry. Field effect mobility and threshold voltage of pentacene-based OTFT with MDT gate dielectric are ~0.4cm2/Vs and -14V, respectively. The hysteresis of OTFT with MDT gate dielectric is small. |
