The application of pentacene-based organic thin film transistor on gas sensing

Hsiao-Wen Zan, Wen Xin Wu, Kuo Hsi Yen*, Yen Ren Lo, Yuh-Shyong Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We utilize the pentacene-based organic thin film transistor (OTFT) to act as a NH3 gas sensor. When the NH3 gas interacts with the OTFT, the drain current is reduced and the threshold voltage is negatively shifted toward a larger value. On the other hand, the subthreshold swing does not seem to be significantly influenced by the NH3 gas. From the analysis of gated-4-probes OTFT, the extracted contact resistance is increased and the estimated contact-less field-effect mobility is reduced, with the increase of the NH3 concentration. The reduction of the mobility and the increase of the threshold voltage are also discussed in this study.

Original languageEnglish
Title of host publicationEURODISPLAY-2007 - Proceedings of the 27th International Display Research Conference
Pages454-457
Number of pages4
StatePublished - Sep 2007
EventEURODISPLAY-2007 - 27th International Display Research Conference - Moscow, Russian Federation
Duration: 18 Sep 200722 Sep 2007

Publication series

NameSID Conference Record of the International Display Research Conference
ISSN (Print)1083-1312

Conference

ConferenceEURODISPLAY-2007 - 27th International Display Research Conference
Country/TerritoryRussian Federation
CityMoscow
Period18/09/0722/09/07

Keywords

  • 4-probes
  • Ammonia
  • NH
  • OTFT
  • Pentacene

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