Anisotropy of Charge Transport in a Uniaxially Aligned Fused Electron-Deficient Polymer Processed by Solution Shear Coating.
conjugated polymers
electron transport
organic field-effect transistors
polymer alignment
shear coating
Journal
Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Titre abrégé: Adv Mater
Pays: Germany
ID NLM: 9885358
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
03
01
2020
revised:
11
03
2020
accepted:
22
03
2020
pubmed:
5
5
2020
medline:
5
5
2020
entrez:
5
5
2020
Statut:
ppublish
Résumé
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 cm
Identifiants
pubmed: 32363687
doi: 10.1002/adma.202000063
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2000063Subventions
Organisme : Engineering and Physical Sciences Research Council
ID : EP/M005143/1
Organisme : Royal Society Newton Alumni Fellowship
Organisme : European Research Council
ID : 610115
Pays : International
Informations de copyright
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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