Photomediated ion dynamics enables multi-modal learning, memory and sensing in ultralow-voltage organic electrochemical device.

ABSTRACT: Ion signaling enables biological systems to implement learning, memory and sensing tasks in an energy-efficient manner. Organic electrochemical transistors are promising building blocks for mimicking ion-driven processes in the organism due to the iontronic coupling. However, the ion kinetics of diffusion back to the electrolyte poses a challenge in achieving non-volatility at ultralow gate voltages (V_G) required to mimic human learning and memory capabilities. Here we report a non-volatile heterojunction organic electrochemical device (nHOED) driven by photomediated ion trap and release dynamics. Due to the efficient separation of photogenerated charges within the heterojunction, the holes can be tightly trapped by anions at the photoactive layer-channel interface. This enables

SUBMITTER: Liu G 

PROVIDER: S-EPMC12304320 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature