Development of Design and Manufacturing Technology of Glucose Sensor Based on Organic Electrochemical Transistor

An organic electrochemical transistor (OECT) is a transistor in which the conductive state of the channel changes due to the injection of ions from the electrolyte, so the current in the transistor is provided by the movement of both electrons (holes) and ions. There are developed methods for OECT manufacturing and research, in particular methods for creating electrodes topology, obtaining PEDOT:PSS polymer films and studying OECT current-voltage characteristics. A glucose sensor based on OECT is designed. The dependence of the drain-source current on time and the dependence of the change in the effective gate voltage on the concentration (on the basis of which the sensitivity of the device is determined) are obtained for different types of sensors: with transistor without a gate modification and with gate modified transistors.