Multifunctional PN optoelectronic synapse and its smart integration towards augmented artificial visual system

Abstract Mimicking and extending biological sensory memory processing functions and systems—that play significant roles in enhancing interconnections of the human-physical world—are highly preferable for the Internet of Things. However, conventional artificial sensory systems usually consisted of separated modules or relied on perception-memory-processing devices with applications in a limited domain. Here, we propose a self-rectifying multifunctional synapse based on a unique PN optoelectrical memristor interface, achieving an augmented artificial visual system and multifunctional interconnected ports. The synapse realizes in-sensor motion perception and non-contact control beyond perception-memory-processing functions. The self-rectifying device can self-suppress the sneak current in cross-arrays, enabling large-scale and high-density integration. Further integrating synapse with quantum dot light-emitting diodes (QLEDs) evolves more powerful functions like hardware noise filtering and perception-memory-processing-displaying smart systems.