Optically controllable dual-gate organic transistor produced via phase separation between polymer semiconductor and photochromic spiropyran molecules

Yasushi Ishiguro, Ryoma Hayakawa, Toyohiro Chikyo, Yutaka Wakayama

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We produced an optically controllable dual-gate organic field-effect transistor by a simple one-step spin-coating of a mixed solution of photochromic spiropyran (SP) and poly(3-hexylthiophene) (P3HT). Postannealing enhanced polymer chain ordering of P3HT to induce phase separation into an SP-rich lower layer and an SP-free upper layer. These layers worked independently as transistor channels with distinct optical responsivity. The top channel was optically inactive, but the bottom channel was optically active, because of the photoisomerization of SP. These results demonstrate the potential of our technique to produce a multifunctional photoactive organic transistor by a simple process.

Original languageEnglish
Pages (from-to)10415-10420
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number13
DOIs
Publication statusPublished - 2014 Jul 9
Externally publishedYes

Keywords

  • optically controllable transistor
  • organic field-effect transistor
  • phase separation
  • photochromism
  • poly(3-hexylthiophene)
  • spiropyran

ASJC Scopus subject areas

  • Materials Science(all)

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