Body temperature sensor based on PEDOT:PSS

Abstract

This report describes a novel approach to the fabrication of temperature sensors based on poly(3,4-ethylene dioxythiophene)poly(styrene sulfonate) (PEDOT:PSS). The sensor fabrication process was optimized. It utilizes ink-jet printing technology to deposit layers of silver contacts and sensitive PEDOT:PSS layer, which were subsequently passivated. The main advantage of these fully printed sensors is flexibility, low production cost and quick implementation in the IoT network. In order to demonstrate the use of fabricated temperature sensors (principle of operation based on the resistance change of the PEDOT:PSS layer), a sensor platform was designed and developed, which is capable of sending the measured data automatically and in real-time via the IoT network to a web application.