Light Stimulated IGZO-Based Electric-Double-Layer Transistors For Photoelectric Neuromorphic Devices

Yang, Yi; He, Yongli; Nie, Sha; Shi, Yi; Wan, Qing

doi:10.1109/led.2018.2824339

Cited by 104 publications

(109 citation statements)

References 24 publications

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“…Particularly, photonic synapse devices have received attention because they have several advantages compared to the electronic synapse devices, such as wide bandwidth, low crosstalk, and low power consumption characteristics 18–28. Therefore, researchers have attempted to mimic synaptic behaviors by utilizing optical stimulation and photonic synapse devices have been realized with various materials such as carbon nanotubes,29,30 oxide semiconductors,18,19,25,31,32 perovskite quantum dots,21,33 2D materials,23,24,27,28,34,35 and hybrid perovskites 20,26,36. These devices have demonstrated synaptic functions, such as short‐term plasticity (STP), paired‐pulse facilitation (PPF), long‐term plasticity (LTP), STP‐to‐LTP transition, and spike‐timing‐dependent plasticity by optical stimulation.…”

Section: Figurementioning

confidence: 99%

“…These devices have demonstrated synaptic functions, such as short‐term plasticity (STP), paired‐pulse facilitation (PPF), long‐term plasticity (LTP), STP‐to‐LTP transition, and spike‐timing‐dependent plasticity by optical stimulation. Among these previously reported photonic synapses, photonic synapses that use the persistent photoconductivity (PPC) phenomenon in oxide semiconductor have advantages such as simple device structure and compatibility with complementary metal–oxide–semiconductor (CMOS) fabrication processes 18,19,31. PPC in photonic synapses based on oxide semiconductors is similar to biological synaptic plasticity in a synapse.…”

Section: Figurementioning

confidence: 99%

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Synergistic Improvement of Long‐Term Plasticity in Photonic Synapses Using Ferroelectric Polarization in Hafnia‐Based Oxide‐Semiconductor Transistors

2020

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A number of synapse devices have been intensively studied for the neuromorphic system which is the next‐generation energy‐efficient computing method. Among these various types of synapse devices, photonic synapse devices recently attracted significant attention. In particular, the photonic synapse devices using persistent photoconductivity (PPC) phenomena in oxide semiconductors are receiving much attention due to the similarity between relaxation characteristics of PPC phenomena and Ca2+ dynamics of biological synapses. However, these devices have limitations in its controllability of the relaxation characteristics of PPC behaviors. To utilize the oxide semiconductor as photonic synapse devices, relaxation behavior needs to be accurately controlled. In this study, a photonic synapse device with controlled relaxation characteristics by using an oxide semiconductor and a ferroelectric layer is demonstrated. This device exploits the PPC characteristics to demonstrate synaptic functions including short‐term plasticity, paired‐pulse facilitation (PPF), and long‐term plasticity (LTP). The relaxation properties are controlled by the polarization of the ferroelectric layer, and this polarization is used to control the amount by which the conductance levels increase during PPF operation and to enhance LTP characteristics. This study provides an important step toward the development of photonic synapses with tunable synaptic functions.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Synergistic Improvement of Long‐Term Plasticity in Photonic Synapses Using Ferroelectric Polarization in Hafnia‐Based Oxide‐Semiconductor Transistors

2020

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“…Inorganic semiconductors have the advantages of stability and high charge‐carrier mobility, so they have great potential in three‐terminal artificial synapses. Inorganic semiconductors that have been used in synaptic electronic devices include indium zinc oxide (IZO), indium‐gallium‐zinc oxide (IGZO), single‐walled carbon nanotubes (SWCNTs), graphene, molybdenum disulfide (MoS 2 ), black phosphorous, tin dioxide (SnO 2 ), molybdenum trioxide (MoO 3 ), and tungsten trioxide (WO 3 ) . Essential working principles of biological synapses can be emulated.…”

Section: Three‐terminal Synaptic Devicementioning

confidence: 99%

Recent Progress in Three‐Terminal Artificial Synapses: From Device to System

Han

Wei

et al. 2019

Small

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Synapses are essential to the transmission of nervous signals. Synaptic plasticity allows changes in synaptic strength that make a brain capable of learning from experience. During development of neuromorphic electronics, great efforts have been made to design and fabricate electronic devices that emulate synapses. Three‐terminal artificial synapses have the merits of concurrently transmitting signals and learning. Inorganic and organic electronic synapses have mimicked plasticity and learning. Optoelectronic synapses and photonic synapses have the prospective benefits of low electrical energy loss, high bandwidth, and mechanical robustness. These artificial synapses provide new opportunities for the development of neuromorphic systems that can use parallel processing to manipulate datasets in real time. Synaptic devices have also been used to build artificial sensory systems. Here, recent progress in the development and application of three‐terminal artificial synapses and artificial sensory systems is reviewed.

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“…In terms of three‐terminal synaptic transistors, Yang et al reported an IGZO‐based electric‐double‐layer photoelectric transistor operated in low voltage for mimicking major synaptic behaviors . They also utilized gate voltage modulation for the transition from depression mode to potentiation mode.…”

Section: Emerging Materials‐based Synaptic Devicesmentioning

confidence: 99%

Recent Progress in Photonic Synapses for Neuromorphic Systems

Zhang

Dai

Zhao

et al. 2020

Advanced Intelligent Systems

152

118

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Implementing synaptic functions with electronic devices is critical to achieve neuromorphic systems on the hardware platform, as synapses play important roles in brain computing and memory. Synapses modulated by light signals, which are also referred as photonic synapses, can not only make effective use of the outstanding properties of light to provide devices with ultrahigh propagation speed, high bandwidth and low crosstalk but also provide a noncontact writing method, which can facilitate the evolution of optical wireless communication and operation. More importantly, real‐time image processing can also be performed by photonic synapses which possess temporary memory. Thus far, tremendous efforts have been taken to design and fabricate photonic synapses. Herein, a summary of the development of different kinds of emerging materials utilized in photonic synaptic devices including memristors, field‐effect transistors, and phase change memory is presented, followed by the innovative applications of photonic synapses for neuromorphic systems. Finally, some current challenges and future study directions are discussed.

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Light Stimulated IGZO-Based Electric-Double-Layer Transistors For Photoelectric Neuromorphic Devices

Cited by 104 publications

References 24 publications

Synergistic Improvement of Long‐Term Plasticity in Photonic Synapses Using Ferroelectric Polarization in Hafnia‐Based Oxide‐Semiconductor Transistors

Synergistic Improvement of Long‐Term Plasticity in Photonic Synapses Using Ferroelectric Polarization in Hafnia‐Based Oxide‐Semiconductor Transistors

Recent Progress in Three‐Terminal Artificial Synapses: From Device to System

Recent Progress in Photonic Synapses for Neuromorphic Systems

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