Electric-double-layer transistors for synaptic devices and neuromorphic systems

He, Yongli; Yang, Yi; Nie, Sha; Li, Rui; Wan, Qing

doi:10.1039/c8tc00530c

Cited by 187 publications

(189 citation statements)

References 211 publications

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“…As a final demonstration of the utility of this field‐driven oxygen vacancy generation approach, neuromorphic transistors with programmable plasticity were realized in a comprehensive manner, correlating the above explanations with weight plasticity. Very recently, electrolyte‐gated FETs have been extensively researched for hardware emulation of biological signal‐processing . Contrary to mass storage and conventional logic operations, emulation of biological signal processing sets unique requirements on the hardware switching devices, namely a strong operational history, analog (nonabrupt) switching transitions, continuously distributed conductance states, and programmable plasticity .…”

Section: Resultsmentioning

confidence: 99%

“…Very recently, electrolyte-gated FETs have been extensively researched for hardware emulation of biological signalprocessing. [34,35] Contrary to mass storage and conventional logic operations, emulation of biological signal processing sets unique requirements on the hardware switching devices, namely a strong operational history, analog (nonabrupt) switching transitions, continuously distributed conductance states, and programmable plasticity. [36] Although two-terminal memristive solutions have dominated this research area, threeterminal FET-based solutions have recently received significant scientific attention in this regard.…”

Section: Resultsmentioning

confidence: 99%

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Field‐Driven Athermal Activation of Amorphous Metal Oxide Semiconductors for Flexible Programmable Logic Circuits and Neuromorphic Electronics

Kulkarni

John

Tiwari

et al. 2019

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Despite extensive research, large‐scale realization of metal‐oxide electronics is still impeded by high‐temperature fabrication, incompatible with flexible substrates. Ideally, an athermal treatment modifying the electronic structure of amorphous metal oxide semiconductors (AMOS) to generate sufficient carrier concentration would help mitigate such high‐temperature requirements, enabling realization of high‐performance electronics on flexible substrates. Here, a novel field‐driven athermal activation of AMOS channels is demonstrated via an electrolyte‐gating approach. Facilitating migration of charged oxygen species across the semiconductor–dielectric interface, this approach modulates the local electronic structure of the channel, generating sufficient carriers for charge transport and activating oxygen‐compensated thin films. The thin‐film transistors (TFTs) investigated here depict an enhancement of linear mobility from 51 to 105.25 cm2 V−1 s−1 (ionic‐gated) and from 8.09 to 14.49 cm2 V−1 s−1 (back‐gated), by creating additional oxygen vacancies. The accompanying stochiometric transformations, monitored via spectroscopic measurements (X‐ray photoelectron spectroscopy) corroborate the detailed electrical (TFT, current evolution) parameter analyses, providing critical insights into the underlying oxygen‐vacancy generation mechanism and clearly demonstrating field‐induced activation as a promising alternative to conventional high‐temperature annealing strategies. Facilitating on‐demand active programing of the operation modes of transistors (enhancement vs depletion), this technique paves way for facile fabrication of logic circuits and neuromorphic transistors for bioinspired computing.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Field‐Driven Athermal Activation of Amorphous Metal Oxide Semiconductors for Flexible Programmable Logic Circuits and Neuromorphic Electronics

Kulkarni

John

Tiwari

et al. 2019

Small

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“…It is worth noting that the neuromorphic computing systemsbased multiple value RRAM devices are expected to overcome the shortcomings of the von Neumann architecture computing platforms and provide high efficiency for data centric applications in the big data era. [3,58,128,133,[146][147][148][149][150] Calcium ions (Ca 2þ ) play a crucial role in the transmission of information between the presynaptic and postsynaptic membrane of biological synapses. Researchers have found that the accumulation and diffusion of silver ions (Ag þ ) in the RRAM functional layer might simulate this passing process of biological information under the pulse sweeping voltages.…”

Section: Application Prospectsmentioning

confidence: 99%

Overview of Resistive Random Access Memory (RRAM): Materials, Filament Mechanisms, Performance Optimization, and Prospects

Wang

Yan

2019

Physica Rapid Research Ltrs

134

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Because conventional nonvolatile memory is limited by process technology and physical size, resistive random access memory (RRAM) gradually enters the field of view due to its simple structure, fast program/erase speed, low power consumption, and so on. This review article summarizes the materials, filament mechanisms, performance optimization, and application prospects of RRAM structures to provide readers with a reference for future investigation. The filament mechanisms, which involve the electrochemical metallization mechanism (ECM), valence change mechanism (VCM), and thermochemical mechanism (TCM), of RRAM devices are particularly highlighted. The parameters that determine the RRAM characteristics such as operating voltages, ON/OFF ratio, endurance, and data retention are improved by incorporating the three methods: 1) “interface engineering”, 2) element doping of functional materials, and 3) introduction of low‐dimensional materials. In the last section, a brief introduction to the future RRAM application prospects and challenges is provided.

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“…Finally, the neuronal network will interpret the visual information so that we can perceive what we see. In the neural network, synapses act as a basic unit to transmit, memorize, recognize, and learn the visual information [4][5][6][7] . Visual perception is the main channel for humans to obtain information.…”

Section: Introductionmentioning

confidence: 99%

Organic molecular crystal-based photosynaptic devices for an artificial visual-perception system

et al. 2019

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Recreating the visual-perception properties using organic electronic devices is highly desired for visual prosthetics and artificial intelligence. Although the integration of organic light-sensing components with synaptic devices can realize the recognition and memory functions for perceived images, complicated problems in device integration for practical applications are generally encountered. Here we demonstrate a new type of organic photosynaptic device based on organic molecular crystals, which can provide optical-sensing and synaptic functions together in one device by means of a unique photon-induced charge transfer effect. This device successfully emulates the working principles of human visual perception in terms of short-term plasticity, long-term potentiation, and spike-timing-dependent plasticity. Moreover, a proof-of-concept artificial image-perception system is demonstrated by integrating the photosynapses on a flexible substrate. The new devices using organic semiconductors may open up innovative application areas, such as artificially intelligent electronic and perception systems, and facilitate the integration of such devices into nextgeneration flexible and stretchable electronics.

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Electric-double-layer transistors for synaptic devices and neuromorphic systems

Abstract: This article reviews the recent progress in the field of electric-double-layer transistors for synaptic devices and neuromorphic systems.

Cited by 187 publications

References 211 publications

Field‐Driven Athermal Activation of Amorphous Metal Oxide Semiconductors for Flexible Programmable Logic Circuits and Neuromorphic Electronics

Field‐Driven Athermal Activation of Amorphous Metal Oxide Semiconductors for Flexible Programmable Logic Circuits and Neuromorphic Electronics

Overview of Resistive Random Access Memory (RRAM): Materials, Filament Mechanisms, Performance Optimization, and Prospects

Organic molecular crystal-based photosynaptic devices for an artificial visual-perception system

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