| 초록 |
We report high-performance and air-stable organic field-effect transistors (OFETs) fabricated with bottlebrush polymer gate dielectrics thermally-crosslinked in a remarkably short time. By utilizing the bottlebrush polymers with a varied degree of polymerization prepared by living anionic polymerization and ring opening metathesis polymerization, we investigate the effect of density of alkyne functional groups per repeat unit on on-set crosslinking time (tc) and device properties of the bottlebrush polymers. Interestingly, the bottlebrush polymer having the higher density of alkyne groups showed reduced tc and hence the lowest tc (0.6 min) is obtained from the bottlebrush polymer with the highest density of alkyne functional groups. Combined with the superior device performance and extended device lifetime of OFETs fabricated with the bottlebrush polymers thermally-crosslinked in a sufficiently short time (≤ 1 min), these results demonstrate that bottlebrush polymers with tailored density of grafted alkyne functionalities would be promising dielectric materials for realization of high-performance OFETs fabricated by a high-throughput fabrication method. |
