A humidity sensor has been fabricated by using thin films of iodine-doped polyphenylacetylene. The electrical response of the sensor towards relative humidity variations is fast and reversible during long working periods. The investigated sensor is also sensitive to the vapours of other chemical substances.
Furlani, A., Iucci, G., Russo, M.v., Bearzotti, A., D'Amico, A. (1992). Thin films of iodine-polyphenylacetylene as starting material for humidity sensors. SENSORS AND ACTUATORS. B, CHEMICAL, 7, 447-450 [10.1016/0925-4005(92)80341-T].