Structural and dynamic disorder, not ionic trapping, controls charge transport in highly doped conducting polymers
View / Open Files
Authors
Jacobs, Ian E
D'Avino, Gabriele
Lemaur, Vincent
Lin, Yue
Huang, Yuxuan
Chen, Chen
Harrelson, Thomas
Wood, William
Spalek, Leszek J
Mustafa, Tarig
O'Keefe, Christopher A
Simatos, Dimitrios
Tjhe, Dion
Statz, Martin
Strzalka, Joseph
Lee, Jin-Kyun
McCulloch, Iain
Fratini, Simone
Beljonne, David
Publication Date
2022-02-23Journal Title
Journal of the American Chemical Society
ISSN
0002-7863
Publisher
American Chemical Society
Volume
144
Issue
7
Pages
3005-3019
Language
eng
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Jacobs, I. E., D'Avino, G., Lemaur, V., Lin, Y., Huang, Y., Chen, C., Harrelson, T., et al. (2022). Structural and dynamic disorder, not ionic trapping, controls charge
transport in highly doped conducting polymers. Journal of the American Chemical Society, 144 (7), 3005-3019. https://doi.org/10.1021/jacs.1c10651
Abstract
Doped organic semiconductors are critical to emerging device applications,
including thermoelectrics, bioelectronics, and neuromorphic computing devices.
It is commonly assumed that low conductivities in these materials result
primarily from charge trapping by the Coulomb potentials of the dopant
counter-ions. Here, we present a combined experimental and theoretical study
rebutting this belief. Using a newly developed doping technique, we find the
conductivity of several classes of high-mobility conjugated polymers to be
strongly correlated with paracrystalline disorder but poorly correlated with
ionic size, suggesting that Coulomb traps do not limit transport. A general
model for interacting electrons in highly doped polymers is proposed and
carefully parameterized against atomistic calculations, enabling the
calculation of electrical conductivity within the framework of transient
localisation theory. Theoretical calculations are in excellent agreement with
experimental data, providing insights into the disordered-limited nature of
charge transport and suggesting new strategies to further improve
conductivities.
Sponsorship
European Research Council (610115)
Engineering and Physical Sciences Research Council (EP/L015889/1)
Engineering and Physical Sciences Research Council (EP/R031894/1)
Engineering and Physical Sciences Research Council (EP/P024947/1)
Engineering and Physical Sciences Research Council (EP/S019367/1)
Engineering and Physical Sciences Research Council (EP/R00661X/1)
Identifiers
35157800, PMC8874922
External DOI: https://doi.org/10.1021/jacs.1c10651
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335190
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.
Recommended or similar items
The current recommendation prototype on the Apollo Repository will be turned off on 03 February 2023. Although the pilot has been fruitful for both parties, the service provider IKVA is focusing on horizon scanning products and so the recommender service can no longer be supported. We recognise the importance of recommender services in supporting research discovery and are evaluating offerings from other service providers. If you would like to offer feedback on this decision please contact us on: support@repository.cam.ac.uk