Vasileios C. Nikolis, Andreas Mischok, Bernhard Siegmund, Jonas Kublitski, Xiangkun Jia, Johannes Benduhn, Ulrich Hörmann, Dieter Neher, Malte C. Gather, Donato Spoltore, Koen Vandewal
- Strong light-matter coupling can re-arrange the exciton energies in organic semiconductors. Here, we exploit strong coupling by embedding a fullerene-free organic solar cell (OSC) photo-active layer into an optical microcavity, leading to the formation of polariton peaks and a red-shift of the optical gap. At the same time, the open-circuit voltage of the device remains unaffected. This leads to reduced photon energy losses for the low-energy polaritons and a steepening of the absorption edge. While strong coupling reduces the optical gap, the energy of the charge-transfer state is not affected for large driving force donor-acceptor systems. Interestingly, this implies that strong coupling can be exploited in OSCs to reduce the driving force for electron transfer, without chemical or microstructural modifications of the photoactive layer. Our work demonstrates that the processes determining voltage losses in OSCs can now be tuned, and reduced to unprecedented values, simply by manipulating the device architecture.
MetadatenVerfasserangaben: | Vasileios C. Nikolis, Andreas MischokORCiD, Bernhard SiegmundORCiD, Jonas KublitskiORCiD, Xiangkun Jia, Johannes BenduhnORCiD, Ulrich HörmannORCiDGND, Dieter NeherORCiDGND, Malte C. Gather, Donato SpoltoreORCiD, Koen Vandewal |
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DOI: | https://doi.org/10.1038/s41467-019-11717-5 |
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ISSN: | 2041-1723 |
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Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/31420555 |
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Titel des übergeordneten Werks (Englisch): | Nature Communications |
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Verlag: | Nature Publ. Group |
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Verlagsort: | London |
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Publikationstyp: | Wissenschaftlicher Artikel |
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Sprache: | Englisch |
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Datum der Erstveröffentlichung: | 16.08.2019 |
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Erscheinungsjahr: | 2019 |
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Datum der Freischaltung: | 30.11.2020 |
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Band: | 10 |
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Seitenanzahl: | 8 |
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Fördernde Institution: | German Federal Ministry of Education and Research (BMBF) through the Innoprofile project "Organische p-i-n Bauelemente2.2"Federal Ministry of Education & Research (BMBF) [FKZ 03IPT602X]; Volkswagen FoundationVolkswagen [93404]; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG) [404587082]; German Academic Exchange Service (DAAD)Deutscher Akademischer Austausch Dienst (DAAD) [57214224]; German Research Foundation (DFG) within the collaborative research center 951 "Hybrid Inorganic/Organic Systems for Opto-Electronics (HIOS)German Research Foundation (DFG) |
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Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
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Peer Review: | Referiert |
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Publikationsweg: | Open Access / Gold Open-Access |
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| DOAJ gelistet |
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