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

doi:10.1021/acsaelm.3c00407

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

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

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 (F₁₆CuPc). 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.

Original language	English
Pages (from-to)	3403-3409
Number of pages	7
Journal	ACS Applied Electronic Materials
Volume	5
Issue number	6
DOIs	https://doi.org/10.1021/acsaelm.3c00407
State	Published - 27 Jun 2023

Keywords

artificial synapses
image blurring
low-pass filter
organic heterojunction
self-powered optoelectronics

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10.1021/acsaelm.3c00407

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title = "Self-Powered Optoelectronic Device with Depression-Related Synaptic Functions",

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 (F16CuPc). 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.",

keywords = "artificial synapses, image blurring, low-pass filter, organic heterojunction, self-powered optoelectronics",

author = "Mingqing Cui and Pengfei Zhao and Chunli Jiang and Bobo Tian and Chunhua Luo and Hechun Lin and Hui Peng and Duan, \{Chun Gang\}",

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AU - Cui, Mingqing

AU - Zhao, Pengfei

AU - Jiang, Chunli

AU - Tian, Bobo

AU - Luo, Chunhua

AU - Lin, Hechun

AU - Peng, Hui

AU - Duan, Chun Gang

PY - 2023/6/27

Y1 - 2023/6/27

N2 - 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 (F16CuPc). 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.

AB - 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 (F16CuPc). 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.

KW - artificial synapses

KW - image blurring

KW - low-pass filter

KW - organic heterojunction

KW - self-powered optoelectronics

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DO - 10.1021/acsaelm.3c00407

M3 - 文章

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ER -

Self-Powered Optoelectronic Device with Depression-Related Synaptic Functions

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