Fully 3D-printed organic electrochemical transistors

Abstract Organic electrochemical transistors (OECTs) are being researched for various applications, ranging from sensors to logic gates and neuromorphic hardware. To meet the requirements of these diverse device fabrication process must be compatible with flexible scalable digital techniques. Here, we report a direct-write additive fabricate fully 3D-printed OECTs, using 3D printable conducting, semiconducting, insulating, electrolyte inks. These which operate in depletion mode, can fabricated on substrates, resulting high mechanical environmental stability. The OECTs have good dopamine biosensing capabilities (limit detection down 6 µM without metal gate electrodes) show long-term (~1 h) synapse response, indicating their potential applications such as This manufacturing strategy is suitable that require rapid design changes digitally enabled