Printable ammonia sensor based on organic field effect transistor

Kalpana Besar, Shyuan Yang, Xin Guo, Weiguo Huang, Ana M Rule, Patrick N Breysse, Ioannis J. Kymissis, Howard E. Katz

Research output: Contribution to journalArticle

Abstract

We report an organic field-effect transistor (OFET)-based sensor made from printable materials with an unusually high sensitivity of 0.5 ppm v/v for ammonia and with limit of detection on the order of 0.1 ppm v/v. The device developed has a polyethylene terephthalate (PET) substrate, bottom contacts, and poly (3,3⌄-didodecylquaterthiophene) (PQT-12) cast from 4 mg/mL cholorobenzene solution as active semiconductor. The fabrication process is simplified by replacing the gate electrode and dielectric deposition steps with the introduction of static charges on the back surface of the PET substrate by corona charging, a procedure that is adaptable to roll-to-roll processing. Hydrophobic polymers applied to the back surface stabilize this charge, providing evidence for their activity at that location. In the proposed sensor, these static charges are used as a static gate, reducing the OFET architecture to a chemiresistor. The sensor is selective for ammonia over common organic solvent vapors, and the response is generally reversible. The device also demonstrates memory behavior required for dosimetric sensors when kept at low temperature (4 °C to -30 °C). A converse response from an n-channel semiconductor is also reported.

Original languageEnglish (US)
Pages (from-to)3221-3230
Number of pages10
JournalOrganic Electronics: physics, materials, applications
Volume15
Issue number11
DOIs
StatePublished - 2014

Fingerprint

Organic field effect transistors
Ammonia
ammonia
field effect transistors
Polyethylene Terephthalates
sensors
polyethylene terephthalate
Sensors
Polyethylene terephthalates
Semiconductor materials
Substrates
Organic solvents
coronas
charging
casts
Polymers
Vapors
vapors
Data storage equipment
Fabrication

Keywords

  • Ammonia sensor
  • Corona charging
  • Organic field effect transistor
  • Poly(ethyleneterephthalate)
  • PQT-12
  • Silver ink

ASJC Scopus subject areas

  • Biomaterials
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Printable ammonia sensor based on organic field effect transistor. / Besar, Kalpana; Yang, Shyuan; Guo, Xin; Huang, Weiguo; Rule, Ana M; Breysse, Patrick N; Kymissis, Ioannis J.; Katz, Howard E.

In: Organic Electronics: physics, materials, applications, Vol. 15, No. 11, 2014, p. 3221-3230.

Research output: Contribution to journalArticle

Besar, Kalpana ; Yang, Shyuan ; Guo, Xin ; Huang, Weiguo ; Rule, Ana M ; Breysse, Patrick N ; Kymissis, Ioannis J. ; Katz, Howard E. / Printable ammonia sensor based on organic field effect transistor. In: Organic Electronics: physics, materials, applications. 2014 ; Vol. 15, No. 11. pp. 3221-3230.
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