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Fused Bithiophene Imide Dimer-Based n-Type Polymers for High-Performance Organic Electrochemical Transistors

Authors
Feng, KuiShan, WentaoMa, SuxiangWu, ZiangChen, JianhuaGuo, HanLiu, BinWang, JunweiLi, BangbangWoo, Han YoungFabiano, SimoneHuang, WeiGuo, Xugang
Issue Date
2-11월-2021
Publisher
WILEY-V C H VERLAG GMBH
Keywords
electron mobility; fused bithiophene imide dimer; n-type polymer semiconductors; organic electrochemical transistors; organic electronics
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.60, no.45, pp.24198 - 24205
Indexed
SCIE
SCOPUS
Journal Title
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume
60
Number
45
Start Page
24198
End Page
24205
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/135776
DOI
10.1002/anie.202109281
ISSN
1433-7851
Abstract
The development of n-type organic electrochemical transistors (OECTs) lags far behind their p-type counterparts. In order to address this dilemma, we report here two new fused bithiophene imide dimer (f-BTI2)-based n-type polymers with a branched methyl end-capped glycol side chain, which exhibit good solubility, low-lying LUMO energy levels, favorable polymer chain orientation, and efficient ion transport property, thus yielding a remarkable OECT electron mobility (mu(e)) of up to approximate to 10(-2) cm(2) V-1 s(-1) and volumetric capacitance (C*) as high as 443 F cm(-3), simultaneously. As a result, the f-BTI2TEG-FT-based OECTs deliver a record-high maximum geometry-normalized transconductance of 4.60 S cm(-1) and a maximum mu C* product of 15.2 F cm(-1) V-1 s(-1). The mu C* figure of merit is more than one order of magnitude higher than that of the state-of-the-art n-type OECTs. The emergence of f-BTI2TEG-FT brings a new paradigm for developing high-performance n-type polymers for low-power OECT applications.
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