Optoelectronic synapses based on MZO/AZO heterojunction

In contrast to purely electronic neuromorphic devices, neuromorphic devices stimulated by light Neuromorphic devices stimulated by optical signals are gaining attention for their realistic sensory simulation. A transparent optoelectronic neuromorphic device based on a Mg-doped ZnO/Al-doped ZnO (MZO/AZO) heterostructure memristor has been fabricated in this study. It responds to both electrical and optical signals and successfully simulates various synaptic behaviours, such as STP, LTP, and PPF. In addition, the photomemory mechanism was identified by analysing the energy band structures of MZO and AZO.