DataVXAdvanced MaterialsPaper
journal article·2021-10

Signal Filtering Enabled by Spike Voltage‐Dependent Plasticity in Metalloporphyrin‐Based Memristors

Zhiyong Wang, Laiyuan Wang, Yiming Wu, Linyi Bian, Masaru Nagai, Ruolin Jv, Linghai Xie, Haifeng Ling, Qi Li, Hongyu Bian, Mingdong Yi, Naien Shi, Xiaogang Liu, Wei Huang

Advanced Materials· Volume 33· Issue 43
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Source abstract

Abstract

Abstract Neural systems can selectively filter and memorize spatiotemporal information, thus enabling high‐efficient information processing. Emulating such an exquisite biological process in electronic devices is of fundamental importance for developing neuromorphic architectures with efficient in situ edge/parallel computing, and probabilistic inference. Here a novel multifunctional memristor is proposed and demonstrated based on metalloporphyrin/oxide hybrid heterojunction, in which the metalloporphyrin layer allows for dual electronic/ionic transport. Benefiting from the coordination‐assisted ionic diffusion, the device exhibits smooth, gradual conductive transitions. It is shown that the memristive characteristics of this hybrid system can be modulated by altering the metal center for desired metal–oxygen bonding energy and oxygen ions migration dynamics. The spike voltage‐dependent plasticity stemming from the local/extended movement of oxygen ions under low/high voltage is identified, which permits potentiation and depression under unipolar different positive voltages. As a proof‐of‐concept demonstration, memristive arrays are further built to emulate the signal filtering function of the biological visual system. This work demonstrates the ionic intelligence feature of metalloporphyrin and paves the way for implementing efficient neural‐signal analysis in neuromorphic hardware.
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Research context

OpenAlex topics: Advanced Memory and Neural Computing · Photoreceptor and optogenetics research · Neural dynamics and brain function

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Molecular Systems & Organic Devices (CMSOD) Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications Nanjing 210023 China

Department of Chemistry National University of Singapore Singapore 117543 Singapore

Institute of Materials Research and Engineering Agency for Science Technology and Research Singapore 138634 Singapore

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) Nanjing 211816 China

Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering Northwestern Polytechnical University Xi'an 710072 China

Physical Science Division IBM Thomas J. Watson Research Center 1101 Kitchawan Rd Yorktown Heights NY 10598 USA

Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Fuzhou 350207 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · Agency for Science, Technology and Research · Synergetic Innovation Center for Organic Electronics and Information Displays · Priority Academic Program Development of Jiangsu Higher Education Institutions · National Basic Research Program of China

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