High-Current-Density Organic Electrochemical Diodes Enabled by Asymmetric Active Layer Design

被引：13

作者：

Kim, Youngseok ^{[1
]}

Kim, Gunwoo ^{[1
]}

Ding, Bowen ^{[2
,3
]}

Jeong, Dahyun ^{[4
]}

Lee, Inho ^{[5
]}

Park, Sungjun ^{[5
]}

Kim, Bumjoon J. ^{[4
]}

McCulloch, Iain ^{[6
,7
]}

Heeney, Martin ^{[2
,3
]}

Yoon, Myung-Han ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Gwangju 61005, South Korea

[2] Imperial Coll London, Dept Chem, London W12 0BZ, England

[3] Imperial Coll London, Ctr Processable Elect, London W12 0BZ, England

[4] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon 34141, South Korea

[5] Ajou Univ, Dept Elect & Comp Engn, Suwon 16499, South Korea

[6] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, KAUST Solar Ctr, Thuwal 239556900, Saudi Arabia

[7] Univ Oxford, Dept Chem, Oxford OX1 3TA, England

来源：

ADVANCED MATERIALS | 2022年 / 34卷 / 07期

基金：

新加坡国家研究基金会; 英国工程与自然科学研究理事会;

关键词：

mixed ionic-electronic conductors; organic diodes; organic electrochemical diodes; organic electrochemical transistors; organic rectifiers; TRANSISTORS;

D O I：

10.1002/adma.202107355

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：10