Anisotropy of Charge Transport in a Uniaxially Aligned Fused Electron-Deficient Polymer Processed by Solution Shear Coating.
Type
ArticleAuthors
Xiao, MingfeiKang, Boseok
Lee, Seon Baek
Perdigão, Luís M A
Luci, Alex
Warr, Daniel A
Senanayak, Satyaprasad P
Nikolka, Mark
Statz, Martin
Wu, Yutian
Sadhanala, Aditya
Schott, Sam
Carey, Remington
Wang, Qijing
Lee, Mijung
Kim, Chaewon
Onwubiko, Ada
Jellett, Cameron
Liao, Hailiang
Yue, Wan
Cho, Kilwon
Costantini, Giovanni
McCulloch, Iain

Sirringhaus, Henning

KAUST Department
Chemical Science ProgramKAUST Solar Center (KSC)
Physical Science and Engineering (PSE) Division
Date
2020-05-04Online Publication Date
2020-05-04Print Publication Date
2020-06Submitted Date
2020-01-03Permanent link to this record
http://hdl.handle.net/10754/662827
Metadata
Show full item recordAbstract
Precise control of the microstructure in organic semiconductors (OSCs) is essential for developing high-performance organic electronic devices. Here, a comprehensive charge transport characterization of two recently reported rigid-rod conjugated polymers that do not contain single bonds in the main chain is reported. It is demonstrated that the molecular design of the polymer makes it possible to achieve an extended linear backbone structure, which can be directly visualized by high-resolution scanning tunneling microscopy (STM). The rigid structure of the polymers allows the formation of thin films with uniaxially aligned polymer chains by using a simple one-step solution-shear/bar coating technique. These aligned films show a high optical anisotropy with a dichroic ratio of up to a factor of 6. Transport measurements performed using top-gate bottom-contact field-effect transistors exhibit a high saturation electron mobility of 0.2 cm2 V-1 s-1 along the alignment direction, which is more than six times higher than the value reported in the previous work. This work demonstrates that this new class of polymers is able to achieve mobility values comparable to state-of-the-art n-type polymers and identifies an effective processing strategy for this class of rigid-rod polymer system to optimize their charge transport properties.Citation
Xiao, M., Kang, B., Lee, S. B., Perdigão, L. M. A., Luci, A., Warr, D. A., … Sirringhaus, H. (2020). Anisotropy of Charge Transport in a Uniaxially Aligned Fused Electron-Deficient Polymer Processed by Solution Shear Coating. Advanced Materials, 2000063. doi:10.1002/adma.202000063Sponsors
The authors gratefully acknowledge support from the European Research Council (ERC, Synergy Grant 610115) and the Engineering and Physical Sciences Research Council (EPSRC, programme grant EP/M005143/1). S.P.S. acknowledges funding from a Royal Society Newton Alumni Fellowship.Publisher
WileyJournal
Advanced MaterialsPubMed ID
32363687Additional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202000063https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202000063
ae974a485f413a2113503eed53cd6c53
10.1002/adma.202000063
Scopus Count
Except where otherwise noted, this item's license is described as This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and repro-duction in any medium, provided the original work is properly cited.
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