期刊
ADVANCED ELECTRONIC MATERIALS
卷 7, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/aelm.202000945
关键词
depletion‐ region width modulation models; Ga; O-2; (3) photodetectors; pn heterostructure memristors; synaptic simulation; visual memory simulation
资金
- NSFC [62004224]
- Natural science foundation of Hunan province, China [2019JJ50751]
- Project of State Key Laboratory of High-Performance Complex Manufacturing, Central South University, China [ZZYJKT2018-01]
- InnovationDriven Project of CSU [2020CX005]
The research demonstrates controllable light-tunable synaptic memory behaviors utilizing photodetector in series with a memristor, achieving visual memory simulation. A new synaptic device with inherent learning and memory functions is realized, imitating several essential synaptic functions.
Detection and storage of different light information using electronic devices are important to emulate image information learning and memory functions like the human visual system. In this work, the controllable light-tunable synaptic memory behaviors are demonstrated utilizing photodetector in series with memristor (composite memristor). In other words, the composite memristor has the detection-storage function to different light information, realizing visual memory simulation. Herein, a new synaptic device with inherent learning and memory functions is realized based on a pn heterostructure memristor. A depletion-region width modulation model is proposed to explain the memory characteristics. Several essential synaptic functions are imitated. Further, the visual memory array system is built to accomplish the detection and memory processes of patterned light distribution. Importantly, different light information induces different pattern memory characteristics like human eyes. This composite memristor provides a new idea for wider waveband, greater detection range, and more realistic multifunctional electronic eyes.
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