Silicon-Based Hybrid Optoelectronic Devices with Synaptic Plasticity and Stateful Photoresponse
ADVANCED ELECTRONIC MATERIALS(2018)
Abstract
Neuromorphic optoelectronic devices with new functionality have attracted much attention since they can be applied in energy-efficient computing and recognition. Here, a silicon optoelectronic device with a designed configuration resembling the retinal circuitry is reported. This kind of device composed of a silicon photoreceptor and a hafnium metal oxide synapse supports optoelectronic spike-timing-dependent plasticity that is manipulated completely by both optical and electrical stimuli. The optoelectronic plasticity allows the lasting modulation of photoresponses by using a transient optoelectronic stimulus. Stateful photoresponses can thus be regulated according to either the illumination intensity or the electrical compliance current.
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Key words
silicon-based optoelectronic devices,stateful photoresponse,synaptic plasticity
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