Fabrication of vertical organic junction transistor by direct printing method

Gunchul Shin, Gyu Tae Kim, Jeong Sook Ha

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


An organic junction transistor with a vertical structure based on an active layer of poly(3-hexylthiophene) was fabricated by facile micro-contact printing combined with the Langmuir-Schaefer technique, without conventional e-beam or photo-lithography. Direct printing and subsequent annealing of Au-nanoparticles provided control over the thickness of the Au electrode and hence control of the electrical contact between the Au electrode and the active layer, ohmic or Schottky. The junction showed similar current-voltage characteristics to an NPN-type transistor. Current through the emitter was simply controllable by the base voltage and a high transconductance of ~0.2 mS was obtained. This novel fabrication method can be applied to amplifying or fast switching organic devices.

Original languageEnglish
Pages (from-to)731-736
Number of pages6
JournalBulletin of the Korean Chemical Society
Issue number3
Publication statusPublished - 2014 Mar 20


  • Au-nanoparticle
  • Langmuir-Schaefer technique
  • Micro-contact printing
  • Organic junction transistor
  • Poly(3-hexylthiophene)

ASJC Scopus subject areas

  • General Chemistry


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