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Intermolecular-force-driven anisotropy breaks the thermoelectric trade-off in n-type conjugated polymers

Controlling the molecular orientation of conjugated polymers is a vital yet complex process to modulate their optoelectronic properties along with boosting device performance. Here we propose a molecular-force-driven anisotropy strategy to modulate the molecular orientation of conjugated polymers. T...

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Hauptverfasser: Rosas Villalva, Diego (VerfasserIn) , Derewjanko, Dennis (VerfasserIn) , Zhang, Yongcao (VerfasserIn) , Liu, Ye (VerfasserIn) , Bates, Andrew (VerfasserIn) , Sharma, Anirudh (VerfasserIn) , Han, Jianhua (VerfasserIn) , Gibert-Roca, Martí (VerfasserIn) , Arteaga, Osnat Zapata (VerfasserIn) , Jang, Soyeong (VerfasserIn) , Moro, Stefania (VerfasserIn) , Costantini, Giovanni (VerfasserIn) , Gu, Xiaodan (VerfasserIn) , Kemerink, Martijn (VerfasserIn) , Baran, Derya (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 28 April 2025
In: Nature materials
Year: 2025, Jahrgang: 24, Heft: 8, Pages: 1236-1244, [1-5]
ISSN:1476-4660
DOI:10.1038/s41563-025-02207-9
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/s41563-025-02207-9
Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/s41563-025-02207-9
Volltext
Verfasserangaben:Diego Rosas Villalva, Dennis Derewjanko, Yongcao Zhang, Ye Liu, Andrew Bates, Anirudh Sharma, Jianhua Han, Martí Gibert-Roca, Osnat Zapata Arteaga, Soyeong Jang, Stefania Moro, Giovanni Costantini, Xiaodan Gu, Martijn Kemerink & Derya Baran
Beschreibung
Zusammenfassung:Controlling the molecular orientation of conjugated polymers is a vital yet complex process to modulate their optoelectronic properties along with boosting device performance. Here we propose a molecular-force-driven anisotropy strategy to modulate the molecular orientation of conjugated polymers. This strategy relies on the intermolecular interactions, gauged by the Hansen solubility parameters framework, to provide solvent selection criteria for conjugated polymers that render films with a preferential orientation. We showcase molecular-force-driven anisotropy to overcome the inverse coupling between the electrical conductivity and Seebeck coefficient in solution-processed organic thermoelectrics, a major challenge in the field. Our kinetic Monte Carlo simulations suggest that edge-on orientations break the trade-off by increasing the in-plane delocalization length. The molecular-force-driven anisotropy approach yields a power factor of 115 μW m−1 K−2 and a figure of merit of 0.17 at room temperature for the doped n-type 2DPP-2CNTVT:N-DMBI system. This power factor is 20 times larger than that of conventional doping approaches.
Beschreibung:Gesehen am 05.11.2025
Beschreibung:Online Resource
ISSN:1476-4660
DOI:10.1038/s41563-025-02207-9

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