Highly Oriented Polymer Semiconductor Films Compressed at the Surface of Ionic Liquids for High-Performance Polymeric Organic Field-Effect Transistors

Junshi Soeda, Hiroyuki Matsui, Toshihiro Okamoto, Itaru Osaka, Kazuo Takimiya, Jun Takeya

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

A novel and versatile method to align polymer semiconductors is demonstrated. Spreading and subsequent mechanical compression of a polymer thin film on an ionic liquid's surface yield a polymer thin film that has high uniaxial orientation of the polymer backbone, which is tested for typical polymer semiconductors of PB16TTT, PNDTBTC20, and P3HT. TFTs fabricated by the method exhibit significantly higher mobility compared to TFTs fabricated using a conventional spin-coating process.

Original languageEnglish
Pages (from-to)6430-6435
Number of pages6
JournalAdvanced Materials
Volume26
Issue number37
DOIs
Publication statusPublished - 2014 Oct 1
Externally publishedYes

Keywords

  • PBTTT
  • ionic liquids
  • molecular orientation
  • organic transistors
  • polymer semiconductors

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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