Printed Temperature Sensor Based on Self-Doped Conducting Polymers

Abstract The printing of an efficient thermistor temperature sensor by using self-doped conducting polymers has been achieved. The use of a water-soluble polymer as the active material allows printing and processing in green solvents. The sensor showed a good sensitivity to temperature variations, with a temperature coefficient of resistance (TCR) of -1.3%. The sensor also exhibited a better stability and reversibility towards humidity compared to the state-of-the-art PEDOT:PSS.