Referenceless pH Sensor using Organic Electrochemical Transistors

Abstract

Using printing techniques, organic electrochemical transistors are integrated in a differential bridge. This circuit allows biochemical sensing without the use of a reference electrode. Electrodeposited iridium oxide gate electrodes enable pH measurements with increased sensitivity, also demonstrated in complex biological media such as human sweat. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.