2018
DOI: 10.1002/adma.201806227
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A MoS2/PTCDA Hybrid Heterojunction Synapse with Efficient Photoelectric Dual Modulation and Versatility

Abstract: Just as biological synapses provide basic functions for the nervous system, artificial synaptic devices serve as the fundamental building blocks of neuromorphic networks; thus, developing novel artificial synapses is essential for neuromorphic computing. By exploiting the band alignment between 2D inorganic and organic semiconductors, the first multi-functional synaptic transistor based on a molybdenum disulfide (MoS 2 )/perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) hybrid heterojunction, with remarkab… Show more

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Cited by 386 publications
(411 citation statements)
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“…Figure 4e shows the weight change of the excitatory PSC as a function of the presynaptic input pulse with the amplitude of 4 V and base of 0 V. As the presynaptic input pulse width increases from 1µs to 100 ms, the weight change shows a monotonous increase trend from 5% up to over ≈10 4 % as more and more carriers being captured into the PO x trapping layer, resulting in a stronger effect for Fermi level movement. The largest long‐term synaptic weight change reaches 23 300%, exceeding the previously reported results . Continuous pulse stimulations are applied to the device to mimic the long‐term potentiation (LTP) and depression (LTD) of synapses, which are essential synaptic functions for neuromorphic computing.…”
Section: Resultsmentioning
confidence: 68%
“…Figure 4e shows the weight change of the excitatory PSC as a function of the presynaptic input pulse with the amplitude of 4 V and base of 0 V. As the presynaptic input pulse width increases from 1µs to 100 ms, the weight change shows a monotonous increase trend from 5% up to over ≈10 4 % as more and more carriers being captured into the PO x trapping layer, resulting in a stronger effect for Fermi level movement. The largest long‐term synaptic weight change reaches 23 300%, exceeding the previously reported results . Continuous pulse stimulations are applied to the device to mimic the long‐term potentiation (LTP) and depression (LTD) of synapses, which are essential synaptic functions for neuromorphic computing.…”
Section: Resultsmentioning
confidence: 68%
“…MoS 2 /perylene‐3,4,9,10‐tetracarboxylic dianhydride (PTCDA) hybrid heterojunction has been used to develop an efficient photoelectric dual‐modulated synaptic transistor . This 2D inorganic/organic artificial synapse could function by both electrical and optical modulation, and achieved IPSC, EPSC, PPD, PPF, and SRDP.…”
Section: Three‐terminal Synaptic Devicementioning
confidence: 99%
“…h) STP ( V bg = −20 V) to LTP ( V bg = 0 V) transition by V bg modulation. Reproduced with permission . Copyright 2018, John Wiley and Sons.…”
Section: Three‐terminal Synaptic Devicementioning
confidence: 99%
“…Phase change memory materials have been widely used in memory [167][168][169] and neuromorphic computing. [69] Copyright 2019, John Wiley & Sons, Inc. d-f) Reproduced with permission. This would inspire researchers among 2D community to explore distinct Figure 10.…”
Section: Challenges and Outlookmentioning
confidence: 99%
“…Memristive devices relying on charge-trapping effect [64][65][66][67][68][69][70] at the interface are not suitable for development of robust devices, as it is difficult to control the trapping/detrapping process in a reliable way. The unique physical properties that 2D layered materials and vdW heterostructure possess have not been fully exploited for designing neuromorphic devices with new working principles.…”
Section: Introductionmentioning
confidence: 99%