Selective Dispersion of Semiconducting SWNTs via Conjugated Polymers for Electronic Device Applications
발표자
이승훈 (공주대학교)
연구책임자
이승훈 (공주대학교)
초록
내용
This talk presents two studies utilizing conjugated polymers for organic and nanotube-based electronics. First, we achieved high-purity semiconducting SWNTs via selective dispersion using polyfluorene derivatives. Optimized processing enabled high-performance transistors with mobilities up to 43.6 cm²/V·s and ON/OFF ratios over 10⁴. Second, we investigated dark current suppression in organic photodetectors using fluorinated polymers. Analysis of energetic disorder and Urbach energy revealed that improved molecular ordering reduced trap-assisted recombination, enabling low dark current while maintaining high quantum efficiency. These results demonstrate how conjugated polymers can be applied both in nanomaterial sorting and in improving device performance.