| 초록 |
Single-walled carbon nanotubes (SWNTs) are an ideal channel material for next generation for flexible and printed electronics due to their high mechanical flexibility and solution processability. However, to fully realize these applications, 1) semiconducting SWNTs must be fully separated from metallic SWNTs and 2) densely aligned over a large area, in a facile and scalable manner. To address the former, we have investigated solution-based sorting of SWNTs using various conjugated polymers. With proper design of conjugated polymers, certain diameter range of the semiconducting SWNTs was selectively dispersed with high efficiency. Possible mechanism underlying such selective dispersion was developed to understand and further improve solution-based sorting process. To address the latter, we have developed solution-shearing technique to densely align SWNTs over a large area. On-current density was improved by an order of magnitude over that of random network. |
