Periodic array of polyelectrolyte-gated organic transistors from electrospun poly(3-hexylthiophene) nanofibers

Sung W. Lee, Hyun J. Lee, Ji H. Choi, Won G. Koh, Jae M. Myoung, Jae H. Hur, Jong J. Park, Jeong H. Cho, Unyong Jeong

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

High-performance organic field-effect transistors (OFETs) based on polyelectrolyte gate dielectric and electrospun poly(3hexylthiophene) (P3HT) nanofibers were fabricated on a flexible polymer substrate. The use of UV-crossIinked hydrogel including ionic liquids for the insulating layer enabled fast and large-area fabrication of transistor arrays. The P3HT nanofibers were directly deposited on the methacrylated polymer substrate. During UV irradiation through a patterned mask, the methacrylate groups formed covalent bonds with the patterned polyelectrolyte dielectric layer, which provides mechanical stability to the devices. The OFETs operate at voltages of less than 2 V. The average field-effect mobility and on/off ratio were ∼2 cm2/(Vs) and 105, respectively.

Original languageEnglish
Pages (from-to)347-351
Number of pages5
JournalNano letters
Volume10
Issue number1
DOIs
Publication statusPublished - 2010 Jan 13

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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