In:
Angewandte Chemie, Wiley, Vol. 133, No. 45 ( 2021-11-02), p. 24400-24407
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 ( μ e ) of up 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 μC * product of 15.2 F cm −1 V −1 s −1 . The μC * 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.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.45
DOI:
10.1002/ange.202109281
Language:
English
Publisher:
Wiley
Publication Date:
2021
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