Distance-resilient conductivity in p-doped polythiophenes
Scalable organic electronic devices necessitate effective charge transport over long distances. We assess here the conductivity and its distance-resilience in doped polythiophene films with alkyl and oligoether side chains. We find that the polymers with oligoether side chains retain 80-90% of the c...
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| Hauptverfasser: | , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 August 2025
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| In: |
Materials Horizons
Year: 2025, Jahrgang: 12, Heft: 24, Pages: 10827-10838 |
| ISSN: | 2051-6355 |
| DOI: | 10.1039/D5MH00620A |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1039/D5MH00620A Verlag, kostenfrei, Volltext: https://pubs.rsc.org/en/content/articlelanding/2025/mh/d5mh00620a 
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| Verfasserangaben: | Eva Röck, Demetra Tsokkou, Basil Hunger, Maximilian M. Horn, Sepideh Zokaei, Renee Kroon, Jesika Asatryan, Jaime Martín, Christian Müller, Martijn Kemerink and Natalie Banerji |
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| 245 | 1 | 0 | |a Distance-resilient conductivity in p-doped polythiophenes |c Eva Röck, Demetra Tsokkou, Basil Hunger, Maximilian M. Horn, Sepideh Zokaei, Renee Kroon, Jesika Asatryan, Jaime Martín, Christian Müller, Martijn Kemerink and Natalie Banerji |
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| 520 | |a Scalable organic electronic devices necessitate effective charge transport over long distances. We assess here the conductivity and its distance-resilience in doped polythiophene films with alkyl and oligoether side chains. We find that the polymers with oligoether side chains retain 80-90% of the conductivity over five orders of magnitude in distance (from tens of nanometers to millimeters), when doped with 2,3,5,6-tetrafluoro-tetracyanoquinodimethane (F4TCNQ). For P(g42T-T) co-processed with F4TCNQ, this leads to an over 100 times enhanced long-range conductivity (43 S cm−1) compared to doped poly(3-hexylthiophene) (P3HT, 0.2 S cm−1). Optimization of the oligoether side chain length and doping protocol pushes the conductivity to 330 S cm−1. Kinetic Monte Carlo simulations of nanoscale terahertz conductivity data reveal that the local mobility of the doped P(g42T-T):F4TCNQ film benefits from a higher dielectric constant (reduced Coulomb binding to the ionized dopant) and from lower energetic disorder. Those benefits persist on the macroscopic scale, while spatial charge confinement and a lack of connectivity hinder the long-range transport of moderately doped P3HT:F4TCNQ. However, strongly doping P3HT using magic blue leads to enhanced conductivity with distance-resilience >80%. The distance-resilience is generalized for different polymer:dopant systems once a highly conductive regime (>30 S cm−1) is reached. This highlights an effective strategy to overcome limitations in terms of electrostatic binding and multi-scale polymer ordering, enhancing both the short-range and the long-range conductivity of doped conjugated polymers. | ||
| 700 | 1 | |a Tsokkou, Demetra |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hunger, Basil |e VerfasserIn |4 aut | |
| 700 | 1 | |a Horn, Maximilian M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zokaei, Sepideh |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kroon, Renee |e VerfasserIn |4 aut | |
| 700 | 1 | |a Asatryan, Jesika |e VerfasserIn |4 aut | |
| 700 | 1 | |a Martín, Jaime |e VerfasserIn |4 aut | |
| 700 | 1 | |a Müller, Christian |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kemerink, Martijn |e VerfasserIn |0 (DE-588)1200360753 |0 (DE-627)1683330668 |4 aut | |
| 700 | 1 | |a Banerji, Natalie |e VerfasserIn |4 aut | |
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