Flexible all-polymer field effect transistors with optical transparency using electrically conducting polymers

Myung Sub Lee, Han Saem Kang, Hyun Suk Kang, Jinsoo Joo, Arthur J. Epstein, Jun Young Lee

Research output: Contribution to journalConference articlepeer-review

46 Citations (Scopus)


We fabricated the flexible All-polymer field effect transistors (FETs) with optical transparency, whose all components were the organic polymeric materials. Active channel and all three electrodes were formed on a flexible polymer substrate using the simple photolithographic patterning technique of the electrically conducting poly(3,4-ethylenedioxythiophene) (PEDOT) or polypyrrole (PPy). Transparent photocrosslinkable polymers such as poly(vinyl cinnamate) or Epoxy/MAA polymer were used as the dielectric layer. We investigated the electrical characteristics of the FETs by measuring the source-drain current with sweeping the gate voltage. The source-drain current of the FETs decreased with increase of the positive gate voltage, implying the p-type FETs worked in the depletion mode. We believe the All-polymer FETs have significant advantages over other existing inorganic or organic FETs since the All-polymer FETs can be fabricated using the simple photolithographic process at room temperature and possess mechanical flexibility and optical transparency.

Original languageEnglish
Pages (from-to)169-173
Number of pages5
JournalThin Solid Films
Issue number1-2
Publication statusPublished - 2005 Apr 22
EventICMAT 03 -
Duration: 2003 Dec 72003 Dec 12

Bibliographical note

Funding Information:
This work was supported by Information Display R&D Center, one of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology of Korea.


  • All-polymer field effect transistor
  • Electrically conducting polymer
  • Photolithographic micropatterning
  • Poly(3,4-ethylenedioxythiophene)
  • Polypyrrole

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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