Portable system for transient response of ultrathin organic electrochemical transistor arrays

This is the authors' abstract. We don't add key points for this paper.

Organic electrochemical transistors (OECTs) have been used for various applications in health monitoring due to their built-in amplification and biocompatibility. This work establishes a straightforward fabrication process for an ultrathin and flexible OECT array. The array's OECTs achieve peak transconductance values of 4.7 mS to 5.1 mS and ON-OFF current ratios of 201 to 243. A portable system is developed for easy transient characterization of OECTs in response to stimulation signals with a frequency range of 1-10 Hz and magnitudes of 5-100 mV, removing the need for bulky specialized characterization equipment.Clinical Relevance- This study presents the development of an ultrathin OECT array and a portable characterization system that offers convenient and reliable transient testing before in vivo recording of biopotential signals.