Azobenzene-introduced organic electrochemical transistors with non-volatile artificial synapse for neuromorphic computing

https://www.eurekalert.org/news-releases/1143830

"long-term memory lost because injected ions spontaneously back-diffuse into electrolyte (de-doping) once electrical stimulation ceases... overcome incorporating redox-active azobenzene layer into lithium-ion gel electrolyte transistors suppressing ion back-diffusion, preserving electrochemically doped states for >800 seconds... azobenzene layer reversible lithiation maintains charge balance/ electrical neutrality, stabilizing channel's doped state enabling long-term synaptic plasticity... 93.02% recognition accuracy"