Polymer brush as a facile dielectric surface treatment for high-performance, stable, soluble acene-based transistors

Kyungmin Park, Song Hee Park, Eunhye Kim, Jong Dae Kim, Sung Yup An, Ho Sun Lim, Hyun Hwi Lee, Do Hwan Kim, Du Yeol Ryu, Dong Ryeol Lee, Jeong Ho Cho

Research output: Contribution to journalArticle

34 Citations (Scopus)

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 languageEnglish
Pages (from-to)5377-5382
Number of pages6
JournalChemistry of Materials
Volume22
Issue number18
DOIs
Publication statusPublished - 2010 Sep 28

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Polymer brush as a facile dielectric surface treatment for high-performance, stable, soluble acene-based transistors'. Together they form a unique fingerprint.

Cite this