Regensburg 2022 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 1: Organic Electronics and Photovoltaics 1

CPP 1.9: Vortrag

Montag, 5. September 2022, 12:00–12:15, H38

Dual-Gate Organic Electrochemical Transistors and Circuits — •Hsin Tseng, Anton Weissbach, Karl Leo, and Hans Kleemann — Dresden Integrated Center for Applied Physics and Photonic Materials, TU Dresden, Dresden, Germany

Organic mixed ionic-electronic conductors (OMIECs) are currently in the spotlight of research for diverse applications. Among all, organic electrochemical transistors (OECTs) stand out as organic synaptic devices for integrated bioelectronics leading to neuromorphic computing applications, thanks to their low operating voltage, biocompatibility, and the ionic and electronic interactions in OMIECs. Modifying OMIECs by molecular design enables accumulation-mode OECTs, resulting in broad IC applications. However, the side chain molecular design of the polymer is unfavorable for IC design and manufacturing processes. Here, we show an OECT with photo-patternable solid electrolyte advancing towards integrated circuits. We discuss how alterable device parameters can be employed to adjust the OECT performance. In particular, we demonstrate how the biasing conditions govern the time constant of OECTs. In addition, we discuss how a dual-gate OECT architecture can be employed to tune the threshold voltage of OECTs and control the ionic and electronic charge transport in the electrolyte and OMIECs without any complicated molecular design. The electrical analysis of solid-state electrolyte OECTs provides new insights stimulating higher investigations on ionic and electronic interactions and coupled transport properties in OMIECs and paves the foundation for the integration of OECTs for advanced applications.