The sensitivity to relative humidity of a sensor based on I-2-doped polyphenylacetylene 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; G., Polzonetti; G., Iucci; A., Furlani; Russo, Maria Vittoria. - In: MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY. - ISSN 0921-5107. - 40:1(1996), pp. 1-4. [10.1016/0921-5107(96)01589-9]
Investigations on the response to humidity of an interdigitated electrode structure coated with iodine doped polyphenylacetylene
RUSSO, Maria Vittoria
1996
Abstract
The sensitivity to relative humidity of a sensor based on I-2-doped polyphenylacetylene 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.