Cyano-Functionalized n-Type Polymer with High Electron Mobility for High-Performance Organic Electrochemical Transistors

Feng Kui; Shan Wentao; Wang JunweiLee Jin-WooYang WanliWu WenchangWang YimeiKim Bumjoon J.Guo XugangGuo Han

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Cyano-Functionalized n-Type Polymer with High Electron Mobility for High-Performance Organic Electrochemical Transistors

机译：Cyano-Functionalized n-Type Polymer with High Electron Mobility for High-Performance Organic Electrochemical Transistors

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n-Type organic mixed ionic-electronic conductors (OMIECs) with high electron mobility are scarce and highly challenging to develop. As a result, the figure-of-merit (mu C*) of n-type organic electrochemical transistors (OECTs) lags far behind the p-type analogs, restraining the development of OECT-based low-power complementary circuits and biosensors. Here, two n-type donor-acceptor (D-A) polymers based on fused bithiophene imide dimer f-BTI2 as the acceptor unit and thienylene-vinylene-thienylene (TVT) as the donor co-unit are reported. The cyanation of TVT enables polymer f-BTI2g-TVTCN with simultaneously enhanced ion-uptake ability, film structural order, and charge-transport property. As a result, it is able to obtain a high volumetric capacitance (C*) of 170 +/- 22 F cm(-3) and a record OECT electron mobility (mu(e,OECT)) of 0.24 cm(2) V-1 s(-1) for f-BTI2g-TVTCN, subsequently achieving a state-of-the-art mu C* of 41.3 F cm(-1) V-1 s(-1) and geometry-normalized transconductance (g(m,norm)) of 12.8 S cm(-1) in n-type accumulation-mode OECTs. In contrast, only a moderate mu C* of 1.50 F cm(-1) V-1 s(-1) is measured for the non-cyanated polymer f-BTI2g-TVT. These remarkable results demonstrate the great power of cyano functionalization of polymer semiconductors in developing n-type OMIECs with substantial electron mobility in aqueous environment for high-performance n-type OECTs.

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《Advanced Materials》 |2022年第24期|2201340.1-2201340.10|共10页
作者
Feng Kui; Shan Wentao; Wang JunweiLee Jin-WooYang WanliWu WenchangWang YimeiKim Bumjoon J.Guo XugangGuo Han;
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Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China;

Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea;

Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China|Southern Univ Sci & Technol SUSTech, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R ChinaSouthern Univ Sci & Technol SUSTech, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Guangdong, Peoples R China|Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China;

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正文语种英语
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cyano-functionalization; electron mobility; n-type polymer semiconductors; organic electrochemical transistors; organic mixed ionic-electronic conductors;

Cyano-Functionalized n-Type Polymer with High Electron Mobility for High-Performance Organic Electrochemical Transistors

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