DataVXACS Applied Electronic MaterialsPaper
journal article·2023-06-27

Self-Powered Optoelectronic Device with Depression-Related Synaptic Functions

Mingqing Cui, Pengfei Zhao, Chunli Jiang, Bobo Tian, Chunhua Luo, Hechun Lin, Hui Peng, Chun-Gang Duan

ACS Applied Electronic Materials· Volume 5· Issue 6
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Source abstract

Abstract

Great effort has been made for the development of optoelectronic synapses that play an important role in constructing artificial visual systems. However, most reported optoelectronic synaptic devices have difficulty mimicking depression-related synaptic functions under optical stimulation. Herein, we report a self-powered optoelectronic synaptic device based on an organic heterojunction of poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE))/copper phthalocyanine (CuPc)/hexadecafluorophthalocyanine copper (F 16 CuPc). A dielectric layer of P(VDF-TrFE) was induced to generate an energy barrier to improve its synaptic performance. The fabricated device exhibited inhibitory postsynaptic current (IPSC) function under continuous stimulation of 660 nm optical pulses. Some basic functions of biological synapse, such as paired-pulse depression (PPD), spiking-number-dependent plasticity (SNDP), and spiking-rate-dependent plasticity (SRDP), were successfully mimicked. The capability of the device as a low-pass filter for image processing was also demonstrated.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Advanced Memory and Neural Computing · Photoreceptor and optogenetics research · Neuroscience and Neural Engineering

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China

Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China

Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Science and Technology Innovation Plan Of Shanghai Science and Technology Commission

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