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| Verfasst von: | Kuang, Zhuoran [VerfasserIn]  |
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| | Berger, Felix J. [VerfasserIn] |
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| | Pérez Lustres, José Luis [VerfasserIn] |
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| | Wollscheid, Nikolaus [VerfasserIn] |
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| | Li, Han [VerfasserIn] |
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| | Lüttgens, Jan [VerfasserIn] |
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| | Leinen, Merve [VerfasserIn] |
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| | Flavel, Benjamin S. [VerfasserIn] |
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| | Zaumseil, Jana [VerfasserIn] |
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| | Buckup, Tiago [VerfasserIn] |
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| Titel: | Charge transfer from photoexcited semiconducting single-walled carbon nanotubes to wide-bandgap wrapping polymer |
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| Verf.angabe: | Zhuoran Kuang, Felix J. Berger, Jose Luis Pérez Lustres, Nikolaus Wollscheid, Han Li, Jan Lüttgens, Merve Balcı Leinen, Benjamin S. Flavel, Jana Zaumseil, and Tiago Buckup |
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| E-Jahr: | 2021 |
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| Jahr: | April 14, 2021 |
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| Umfang: | 12 S. |
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| Teil: | volume:125 |
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| | year:2021 |
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| | number:15 |
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| | pages:8125-8136 |
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| | extent:12 |
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| Fussnoten: | Gesehen am 25.06.2021 |
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| Titel Quelle: | Enthalten in: The journal of physical chemistry <Washington, DC> / C |
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| Ort Quelle: | Washington, DC : Soc., 2007 |
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| Jahr Quelle: | 2021 |
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| Band/Heft Quelle: | 125(2021), 15, Seite 8125-8136 |
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| ISSN Quelle: | 1932-7455 |
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| Abstract: | As narrow optical bandgap materials, semiconducting single-walled carbon nanotubes (SWCNTs) are rarely regarded as charge donors in photoinduced charge-transfer (PCT) reactions. However, the unique band structure and unusual exciton dynamics of SWCNTs add more possibilities to the classical PCT mechanism. In this work, we demonstrate PCT from photoexcited semiconducting (6,5) SWCNTs to a wide-bandgap wrapping poly-[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(6,6′)-(2,2′-bipyridine)] (PFO-BPy) via femtosecond transient absorption spectroscopy. By monitoring the spectral dynamics of the SWCNT polaron, we show that charge transfer from photoexcited SWCNTs to PFO-BPy can be driven not only by the energetically favorable E33 transition but also by the energetically unfavorable E22 excitation under high pump fluence. This unusual PCT from narrow-bandgap SWCNTs toward a wide-bandgap polymer originates from the up-converted high-energy excitonic state (E33 or higher) that is promoted by the Auger recombination of excitons and charge carriers in SWCNTs. These insights provide new pathways for charge separation in SWCNT-based photodetectors and photovoltaic cells. |
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| DOI: | doi:10.1021/acs.jpcc.0c10171 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1021/acs.jpcc.0c10171 |
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| | DOI: https://doi.org/10.1021/acs.jpcc.0c10171 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1761301349 |
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| Verknüpfungen: | → Zeitschrift |
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Charge transfer from photoexcited semiconducting single-walled carbon nanotubes to wide-bandgap wrapping polymer / Kuang, Zhuoran [VerfasserIn]; April 14, 2021 (Online-Ressource)
