POS5-1611
Electrolyte-Regulated Ion Transport and Memory Dynamics in OMIEC-Based Organic Electrochemical Diodes
Topic
S5. Polymers for Electronics and Photonics
When and Where
Sep 29, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Hae Jung SON
Boseok KANG
Presenter(s)
Minhu Huang (Gwangju Institute of Science and Technology (GIST))
Co-Author(s)
Abstract
Organic mixed ionic–electronic conductors (OMIECs) are promising materials for electrochemical devices, as their coupled ionic and electronic transport enables ion-driven electrochemical doping and allows OMIEC-based devices to mimic key features of biological synaptic behavior. While previous research has predominantly focused on active materials to understand synaptic behavior, whereas the role of electrolyte-dependent ion dynamics has received less attention. In this study, we investigated ion transport and memory dynamics in two-terminal organic electrochemical diodes. The devices exhibited distinct synaptic responses depending on the electrolyte, including long-term potentiation (LTP) and short-term potentiation (STP). Operando measurements revealed structural changes in the OMIEC channel during device operation, suggesting that electrolyte-dependent ion trapping governs the coupling among electrochemical modulation, structural evolution, and synaptic behavior.
