| 초록 |
Organic thin film transistors (OTFTs) for flexible devices require low temperature processing. We report a new cross-linker, 1,3,5-tris(2-propynyloxy)benzene (TYB), which can be cross-linkable at very low temperature 100 oC. Firstly, azide functionalized soluble polyimide is synthesized, and then cross-linking occurs through azide-alkyne cycloaddition reaction with a 1,3,5-tris(2-propynyloxy)benzene (TYB) cross-linker. The metal-insulator-metal (MIM) devices show that they show good leakage current density (3.09ⅹ10-8 A/cm2 at 1 MV/cm) and dielectric constant (3.42) even when cross-linked at very low temperature. Also, it shows good mobility (0.404 cm2/Vs) and on/off ratio (1.25ⅹ105) through the pentacene TFT. Detailed polyimide synthesis method and film fabrication condition will be presented. |
