Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 12, 2019
Previous Article Next Article

Increased charge carrier mobility and molecular packing of a solution sheared diketopyrrolopyrrole-based donor–acceptor copolymer by alkyl side chain modification

Author affiliations

Abstract

Semiconducting polymers based on diketopyrrolopyrrole have achieved high charge carrier mobilities in field-effect transistors due to their strong intermolecular interactions, which lead to a high structural order that is beneficial for charge transport. One factor that influences the degree of order in thin films is the choice of solubilizing side chains. In this study, we present a new polymer, poly{3-([2,2′:5′,2′′-terthiophen]-5-yl)-2,5-bis(6-dodecyloctadecyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione-6,5′′-diyl}, which has extended side chains and side-chain branching points that were moved further away from the polymer backbone. Bottom-gate, top-contact field-effect transistors from solution sheared films of this material show average saturation hole mobilities of close to 1 cm2 V−1 s−1 which is higher than in devices of a commonly used version of this polymer with shorter side chains. The increase in mobility is attributed to an improved structural order in the thin-film state and a decrease in π–π stacking distance. The fabricated devices show very good air-stability without significant degradation in performance after more than one year storage under ambient conditions.

Graphical abstract: Increased charge carrier mobility and molecular packing of a solution sheared diketopyrrolopyrrole-based donor–acceptor copolymer by alkyl side chain modification

Back to tab navigation

Supplementary files

Article information


Submitted
11 Dec 2018
Accepted
25 Feb 2019
First published
08 Mar 2019

J. Mater. Chem. C, 2019,7, 3665-3674
Article type
Paper
Author version available

Increased charge carrier mobility and molecular packing of a solution sheared diketopyrrolopyrrole-based donor–acceptor copolymer by alkyl side chain modification

M. Hambsch, T. Erdmann, A. R. Chew, S. Bernstorff, A. Salleo, A. Kiriy, B. Voit and S. C. B. Mannsfeld, J. Mater. Chem. C, 2019, 7, 3665
DOI: 10.1039/C8TC06255B

Social activity

Search articles by author

Spotlight

Advertisements