The sensitivity to relative humidity of a sensor based on I2-dopedpolyphenylacetylene thin film membranes has been investigated. The sensor geometry allows its application in miniature devices. The response to humidity variations (20%-80%) is fast and reproducible for long times (months). The I/V characteristics suggest that ionic type conductivity is prevailing. Current intensity measurements performed on films of different thicknesses show that surface conductivity is mainly responsible for the sensor's electrical response.
Investigations on the response to humidity of an interdigitated electrode structure coated with iodine doped polyphenylacetylene
A Bearzotti;V Foglietti;
1996
Abstract
The sensitivity to relative humidity of a sensor based on I2-dopedpolyphenylacetylene thin film membranes has been investigated. The sensor geometry allows its application in miniature devices. The response to humidity variations (20%-80%) is fast and reproducible for long times (months). The I/V characteristics suggest that ionic type conductivity is prevailing. Current intensity measurements performed on films of different thicknesses show that surface conductivity is mainly responsible for the sensor's electrical response.File in questo prodotto:
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