| 초록 |
We have developed photo-crosslinkable coumarin-containing polymer, poly(7-(4-vinyl-benzyloxyl)-4-methylcoumarin) (PVBMC) and investigated its electrical and physicochemical properties as a gate-dielectric to organic electronic devices such as organic thin-film transistor (OTFT), load- and complementary-type inverter. Crosslinked PVBMC is prepared by exposing the spin-cast PVBMC thin film to UV light (365 nm) and its properties are characterized by using Fourier-transform IR and UV-visible spectroscopy. Based on the investigation of the photo-crosslinking, we successfully demonstrate photo-patterned PVBMC gate dielectric by optimizing UV exposure time and selecting appropriate developing solvents. Pentacene (p-type) and PTCDI-C8 (n-type) based OTFTs are fabricated with the photo-patterned PVBMC, and load- and complementary-type inverter are prepared. The characteristics of the OTFTs and inverters are discussed in more detail. |
