Electric double layer transistor of organic semiconductor crystals in a four-probe configuration

Hidekazu Shimotani, Haruhiko Asanuma, Yoshihiro Iwasa

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


Electric double layer field-effect transistors (EDL-FETs) of rubrene single crystals using a liquid polymer electrolyte were studied in a four-probe configuration. The channel sheet resistance and the contact resistance normalized by the contact width were 0.24 MΩ and 0.83 kΩcm in the ON-state, respectively. These values are smaller than those of previously reported conventional rubrene crystal FETs, corroborating the high carrier density accumulation in the EDL-FET. In addition, peculiar peak behaviour in the transfer characteristics did not appear in the gate voltage dependence of four-probe conductivity. This observation leads us to conclude that the peak is ascribed to the increase of the contact resistance in the high gate voltage region.

Original languageEnglish
Pages (from-to)3613-3617
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number6 A
Publication statusPublished - 2007 Jun 6


  • Electric double layer
  • FET
  • Organic transistor
  • Rubrene
  • Transistor

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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