F4-TCNQ as an Additive to Impart Stretchable Semiconductors with High Mobility and Stability

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Numerous strategies are developed to impart stretchability to polymer semiconductors. Although these methods improve the ductility, mobility, and stability of such stretchable semiconductors, they nonetheless still need further improvement. Here, it is shown that 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) is an effective molecular additive to tune the properties of a diketopyrrolopyrrole-based (DPP-based) semiconductor. Specifically, the addition of F4-TCNQ is observed to improve the ductility of the semiconductor by altering the polymer's microstructures and dynamic motions. As a p-type dopant additive, F4-TCNQ can also effectively enhance the mobility and stability of the semiconductor through changing the host polymer's packing structures and charge trap passivation. Upon fabricating fully stretchable transistors with F4-TCNQ-DPP blended semiconductor films, it is observed that the resulting stretchable transistors possess one of the highest initial mobility of 1.03 cm(2) V-1 s(-1). The fabricated transistors also exhibit higher stability (both bias and environmental) and mobility retention under repeated strain, compared to those without F4-TCNQ additive. These findings offer a new direction of research on stretchable semiconductors to facilitate future practical applications.
Publisher
WILEY
Issue Date
2020-06
Language
English
Article Type
Article
Citation

ADVANCED ELECTRONIC MATERIALS, v.6, no.6

ISSN
2199-160X
DOI
10.1002/aelm.202000251
URI
http://hdl.handle.net/10203/279393
Appears in Collection
MS-Journal Papers(저널논문)
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