Printable polythiophene gas sensor array for low-cost electronic noses

Josephine B. Chang*, Vincent Liu, Vivek Subramanian, Kevin Sivula, Christine Luscombe, Amanda Murphy, Jinsong Liu, Jean M.J. Fréchet

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

150 Scopus citations


A route for generating arrays of printable polythiophene-based gas sensor materials suitable for low-cost manufacturing is demonstrated. Materials with complementary sensor responses are synthesized by incorporating functional groups into the molecule, either along the polymer backbone or as end-capping groups. Using these materials as printable sensor inks, a functional, integrated gas sensor array chip is fabricated using additive deposition techniques. The sensor array shows sensitivity to a range of volatile organic compounds down to concentrations of 10 ppm. A three-terminal thin film transistor structure is used, allowing the extraction of multiple parameters that help to elucidate the mechanisms responsible for sensor response and the role of the functional groups in this response.

Original languageEnglish (US)
Article number014506
JournalJournal of Applied Physics
Issue number1
StatePublished - 2006
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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