Low-voltage extended gate organic thin film transistors for ion sensing based on semi-conducting polymer electrodes

Shiliang Ji, Qi Jun Sun, Shishir Venkatesh, Yan Yan, Ye Zhou, Jiaqing Zhuang, Li Zhou, Suting Han, Zong Xiang Xu, V. A.L. Roy

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

1 Citation (Scopus)

Abstract

We report a low-voltage organic field-effect transistor consisting of an extended gate sensory area to detect various ions in a solution. The device distinguishes various ions by the shift in threshold voltage and is sensitive to multiple ions with various concentrations. X-ray photoelectron spectroscopy measurements and the resistance changes at the sensor area prove that the ions are doped into the sensitive film at the sensor area. Because of the effect of doping, the conductivity of the semiconductor polymer film changes thus causing a threshold voltage shift.

Original languageEnglish
Title of host publicationOxide-Based Materials and Devices VII
EditorsDavid C. Look, Ferechteh H. Teherani, David J. Rogers
ISBN (Electronic)9781628419849
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventOxide-Based Materials and Devices VII - San Francisco, United States
Duration: 14 Feb 201617 Feb 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9749
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOxide-Based Materials and Devices VII
Country/TerritoryUnited States
CitySan Francisco
Period14/02/1617/02/16

Keywords

  • ions detector
  • low voltage
  • organic field-effect transistors
  • sensor

Fingerprint

Dive into the research topics of 'Low-voltage extended gate organic thin film transistors for ion sensing based on semi-conducting polymer electrodes'. Together they form a unique fingerprint.

Cite this