Abstract: With inherent ionic priorities, mixed ion and electron conductor hybrid devices have been proposed for brain-inspired neuromorphic system applications, demonstrating interesting neuromorphic functions. Here, mixed proton and electron conductor (MPEC) hybrid oxide neuromorphic transistor is proposed by adopting aqueous solution-processed mesoporous silica coating (MSC)-based electrolyte as gate dielectric. With optical and electrical synergetic coupling behaviors, the device demonstrates typical synaptic responses and transition between short-term plasticity and long-term plasticity. With unique field-configurable proton self-modulation behaviors, a pseudo-diode operation mode is demonstrated on the MPEC hybrid transistor. Moreover, the device demonstrates interesting non-associative learning, including habituation and sensitization behavior. The results show that the proposed MPEC hybrid oxide neuromorphic transistor has great potential in the field of neuromorphic engineering and would have potential in the bionic visual perception platform.

Key words: Mixed proton and electron conductor hybrid, Oxide neuromorphic transistors, Non-associative learning, Pseudo-diode