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dc.contributor.authorKim, Youngseok
dc.contributor.authorKim, Gunwoo
dc.contributor.authorDing, Bowen
dc.contributor.authorJeong, Dahyun
dc.contributor.authorLee, Inho
dc.contributor.authorPark, Sungjun
dc.contributor.authorKim, Bumjoon J.
dc.contributor.authorMcCulloch, Iain
dc.contributor.authorHeeney, Martin
dc.contributor.authorYoon, Myung-Han
dc.date.accessioned2021-12-13T07:17:21Z
dc.date.available2021-12-13T07:17:21Z
dc.date.issued2021-12
dc.identifier.citationKim, Y., Kim, G., Ding, B., Jeong, D., Lee, I., Park, S., … Yoon, M. (2021). High Current-density Organic Electrochemical Diodes Enabled by Asymmetric Active Layer Design. Advanced Materials, 2107355. doi:10.1002/adma.202107355
dc.identifier.issn0935-9648
dc.identifier.issn1521-4095
dc.identifier.pmid34852181
dc.identifier.doi10.1002/adma.202107355
dc.identifier.urihttp://hdl.handle.net/10754/674004
dc.description.abstractOwing to outstanding electrical/electrochemical performance, operational stability, mechanical flexibility, and decent biocompatibility, organic mixed ionic-electronic conductors have shown great potential as implantable electrodes for neural recording/stimulation and as active channels for signal switching/amplifying transistors. Nonetheless, no studies exist on the general design rule for high-performance electrochemical diodes, which are essential for highly functional circuit architectures. Herein, we report on generalizable electrochemical diodes with very high current density over 30 kAcm-2 by introducing an asymmetric active layer based on organic mixed ionic-electronic conductors. The underlying mechanism on polarity-sensitive balanced ionic doping/dedoping is elucidated by numerical device analysis and in operando spectroelectrochemical potential mapping, while the general material requirements for electrochemical diode operation are deduced using various types of conjugated polymers. In parallel, analog signal rectification and digital logic processing circuits are successfully demonstrated to show the broad impact of organic electrochemical diode-incorporated circuits. We expect that organic electrochemical diodes will play vital roles in realizing multifunctional soft bioelectronic circuitry in combination with organic electrochemical transistors. This article is protected by copyright. All rights reserved.
dc.description.sponsorshipThe authors thank the Engineering and Physical Sciences Research Council (EPSRC) (EP/T028513/1), the Royal Society and the Wolfson Foundation (Royal Society Wolfson Fellowship) for funding. This work was also supported by a National Research Foundation (NRF) grant funded by the Korean government (MSIT) (NRF-2021R1A2C1013015, NRF-2018M3A7B4070988, NRF-2020M3D1A1030660 and NRF-2020M1A2A2080748), the Global Research Laboratory program (NRF-2017K1A1A2013153) and GIST Research Institute (GRI) grant by the GIST in 2021.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adma.202107355
dc.rightsArchived with thanks to Advanced Materials
dc.subjectorganic rectifier
dc.subjectorganic diode
dc.subjectmixed ionic-electronic conductor
dc.subjectorganic electrochemical transistor
dc.subjectorganic electrochemical diode
dc.titleHigh Current-density Organic Electrochemical Diodes Enabled by Asymmetric Active Layer Design
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalAdvanced Materials
dc.rights.embargodate2022-12-01
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Materials Science and Engineering Gwangju Institute of Science and Technology Gwangju 61005 Republic of Korea
dc.contributor.institutionDepartment of Chemistry and Centre for Processable Electronics Imperial College London London W12 0BZ United Kingdom
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
dc.contributor.institutionDepartment of Electrical and Computer Engineering Ajou University Suwon 16499 Republic of Korea
dc.identifier.pages2107355
kaust.personMcCulloch, Iain
refterms.dateFOA2021-12-13T07:19:14Z


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