Improving the stability of organic redox neuromorphic devices

In this paper, the mechanisms for stability in ENODe devices are investigated. In this work the mechanisms leading to state loss and cycling instability in redox-gated neuromorphic devices are revealed: parasitic redox reactions and out-diffusion of reducing additives. The results of this study are used to design an encapsulation structure which shows an order of magnitude improvement in state retention and cycling stability.