Parallel programming of an ionic floating-gate memory array for scalable neuromorphic computing

Fuller, Elliot J.; Keene, Scott T.; Melianas, Armantas; Wang, Zhongrui; Agarwal, Sapan; Li, Yiyang; Tuchman, Yaakov; James, Conrad D.; Marinella, Matthew J.; Yang, J. Joshua; Salleo, Alberto; Talin, A. Alec

doi:10.1126/science.aaw5581

Title: Parallel programming of an ionic floating-gate memory array for scalable neuromorphic computing

Journal Article · Thu Apr 25 00:00:00 EDT 2019 · Science

DOI:https://doi.org/10.1126/science.aaw5581· OSTI ID:1547461

Fuller, Elliot J.;

;

; Li, Yiyang; Tuchman, Yaakov;

; Marinella, Matthew J.;

;

Neuromorphic computers could overcome efficiency bottlenecks inherent to conventional computing through parallel programming and readout of artificial neural network weights in a crossbar memory array. However, selective and linear weight updates and <10-nanoampere read currents are required for learning that surpasses conventional computing efficiency. We introduce an ionic floating-gate memory array based on a polymer redox transistor connected to a conductive-bridge memory (CBM). Selective and linear programming of a redox transistor array is executed in parallel by overcoming the bridging threshold voltage of the CBMs. Synaptic weight readout with currents <10 nanoamperes is achieved by diluting the conductive polymer with an insulator to decrease the conductance. In conclusion, the redox transistors endure >1 billion write-read operations and support >1-megahertz write-read frequencies.

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Research Organization:: Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001160; AC04-94AL85000

OSTI ID:: 1547461

Alternate ID(s):: OSTI ID: 1570281

Report Number(s):: SAND-2019-11518J; /sci/364/6440/570.atom

Journal Information:: Science, Journal Name: Science Vol. 364 Journal Issue: 6440; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 341 works

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