Electrolyte-gated organic field-effect transistor for selective reversible ion detection

Abstract

An ion-sensitive electrolyte-gated organic field-effect transistor for selective and reversible detection of sodium (Na(+) ) down to 10(-6) M is presented. The inherent low voltage - high current operation of these transistors in combination with a state-of-the-art ion-selective membrane proves to be a novel, versatile modular sensor platform.

Keywords: EGOFET; OFET; electrolyte-gated field-effect transistor; ion sensitive field-effect transistor (ISOFET); ion sensor.