Imperial College London
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ProfessorMartinHeeney

Faculty of Natural Sciences, Department of Chemistry

Professor of Organic Materials
 
 
 
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Contact

 

+44 (0)20 7594 1248m.heeney Website

 
 
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Location

 

401GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kim:2022:10.1002/adma.202107355,
author = {Kim, Y and Kim, G and Ding, B and Jeong, D and Lee, I and Park, S and Kim, BJ and McCulloch, I and Heeney, M and Yoon, M-H},
doi = {10.1002/adma.202107355},
journal = {Advanced Materials},
title = {High-current-density organic electrochemical diodes enabled by asymmetric active layer design},
url = {http://dx.doi.org/10.1002/adma.202107355},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Owing to their 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 a general design rule for high-performance electrochemical diodes, which are essential for highly functional circuit architectures. In this work, generalizable electrochemical diodes with a very high current density over 30 kA cm−2 are designed 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 circuits incorporating organic electrochemical diodes. It is expected that organic electrochemical diodes will play vital roles in realizing multifunctional soft bioelectronic circuitry in combination with organic electrochemical transistors.
AU  - Kim,Y
AU  - Kim,G
AU  - Ding,B
AU  - Jeong,D
AU  - Lee,I
AU  - Park,S
AU  - Kim,BJ
AU  - McCulloch,I
AU  - Heeney,M
AU  - Yoon,M-H
DO  - 10.1002/adma.202107355
PY  - 2022///
SN  - 0935-9648
TI  - High-current-density organic electrochemical diodes enabled by asymmetric active layer design
T2  - Advanced Materials
UR  - http://dx.doi.org/10.1002/adma.202107355
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000740653700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/10.1002/adma.202107355
ER  -
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