Improving the stability of water-gated organic transistors for sensing applications
(English)Manuscript (preprint) (Other academic)
The instability of water-gated organic transistors is a major obstacle for their sensing applications in aqueous media. In the present work, we demonstrate that adding a fluorinated ion exchange membrane, Nafion, on a water-gated organic transistor can increase significantly the stability of the device to air exposure. In addition, choosing a suitable operating voltage range, e.g. Vg=0 ↔ -0.7 V, is shown to be crucial for achieving stable (repeatable) measurements in aqueous media. It is also feasible to exploit this kind of transistor as a chemical sensor to discriminate different chemicals which are dissolved in water.
Printed humidity sensor label;
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-97351OAI: oai:DiVA.org:liu-97351DiVA: diva2:647095