| |  Online-Ressource |
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| Verfasst von: | Köntges, Wolfgang [VerfasserIn]  |
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| | Perkhun, Pavlo [VerfasserIn] |
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| | Kammerer, Jochen [VerfasserIn] |
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| | Alkarsifi, Riva [VerfasserIn] |
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| | Würfel, Uli [VerfasserIn] |
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| | Margeat, Olivier [VerfasserIn] |
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| | Videlot-Ackermann, Christine [VerfasserIn] |
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| | Simon, Jean-Jacques [VerfasserIn] |
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| | Schröder, Rasmus R. [VerfasserIn] |
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| | Ackermann, Jörg [VerfasserIn] |
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| | Pfannmöller, Martin [VerfasserIn] |
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| Titel: | Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends |
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| Verf.angabe: | Wolfgang Köntges, Pavlo Perkhun, Jochen Kammerer, Riva Alkarsifi, Uli Würfel, Olivier Margeat, Christine Videlot-Ackermann, Jean-Jacques Simon, Rasmus R. Schröder, Jörg Ackermann and Martin Pfannmöller |
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| E-Jahr: | 2020 |
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| Jahr: | 21 February 2020 |
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| Umfang: | 10 S. |
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| Fussnoten: | Gesehen am 18.06.2020 |
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| Titel Quelle: | Enthalten in: Energy & environmental science |
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| Ort Quelle: | Cambridge : RSC Publ., 2008 |
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| Jahr Quelle: | 2020 |
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| Band/Heft Quelle: | 13(2020), 4, Seite 1259-1268 |
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| ISSN Quelle: | 1754-5706 |
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| Abstract: | The efficiency of organic solar cells with donor polymers and non-fullerene acceptors depends on a complex morphology. Similar chemical and electronic structures impede generating in-depth insights in morphological details. We visualise molecular arrangements and the nanomorphology in PBDB-T:ITIC blends by correlating transmission electron micrographs and material distribution maps. Material phases are identified by machine learning on hyperspectral data from electron spectroscopic imaging. We observe a specific polymorph of ITIC after thermal annealing. During annealing, enhanced by the presence of additives, PBDB-T acts as nucleation site for ITIC due to strong pi-pi-interactions of the electron withdrawing groups of both molecules. This leads to efficient charge transport paths in ITIC phases with direct pi-pi-contact to PBDB-T at the interface. We conclude that pi-pi-stacking between donor and acceptor molecules facilitates charge carrier generation within mixed interface regions. |
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| DOI: | doi:10.1039/c9ee03535d |
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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/10.1039/c9ee03535d |
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| | DOI: https://doi.org/10.1039/c9ee03535d |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Bibliogr. Hinweis: | Forschungsdaten: Köntges, Wolfgang, 1987 - : Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends [Research data] |
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| Sach-SW: | charge separation |
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| | electron-acceptor |
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| | energy |
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| | films |
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| | photovoltaics |
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| | polymer solar-cells |
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| | solvent |
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| | states |
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| K10plus-PPN: | 1701044013 |
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| Verknüpfungen: | → Zeitschrift |
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Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends / Köntges, Wolfgang [VerfasserIn]; 21 February 2020 (Online-Ressource)
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