Abstract
We developed a facile dielectric surface modification using "grafting to" polymer brushes for high-performance and stable TES-ADT FETs. Polymer brushes were grafted onto oxide substrates by spin-coating and thermal annealing. TES-ADT FETs fabricated on top of the polymer brush layer showed excellent device performance-a field-effect mobility of 0.84 cm2/(V s) and an on/off current ratio of 1×106-that was superior to that of devices using conventional dielectric surface treatments such as HMDS and ODTS. During solvent annealing of the TES-ADT films, the mobile chains of the polymer brushes appear to profoundly influence the diffusion and crystallization of the TES-ADT molecules, while maximizing the π-π interactions along the in-plane direction. Moreover, the polymer brushes yielded excellent electrical and environmental stability because of the complete surface coverage with minimal pinholes and defects.
Original language | English |
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Pages (from-to) | 5377-5382 |
Number of pages | 6 |
Journal | Chemistry of Materials |
Volume | 22 |
Issue number | 18 |
DOIs | |
Publication status | Published - 2010 Sep 28 |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry