Current modulation of a hygroscopic insulator organic field-effect transistor

Tomas G Bäcklund (Corresponding Author), Henrik G O Sandberg, R. Österbacka, Henrik Stubb

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)


We have fabricated solution processable polymer transistors with high conductivity, requiring only a few volts for obtaining good current modulation. The devices can be fabricated and operated in air and the operation is greatly enhanced in humid atmosphere. Devices reach an On∕Off ratio of about 600 and a subthreshold swing of 500 mV per decade operating on voltages less than 2 V. In this letter the mechanism behind the current modulation is investigated, and we show that the current is modulated through ion-assisted oxidation and reduction of the semiconductor by ions moving vertically in the insulator material to the transistor channel.
Original languageEnglish
Pages (from-to)3887 - 3889
Number of pages3
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed


  • insulated gate field effect transistors
  • electrical conductivity transitions
  • polymers

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