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Molecular donor-acceptor dyads for efficient single-material organic solar cells

Single-material organic solar cells (SMOSCs) promise several advantages with respect to prospective applications in printed large-area solar foils. Only one photoactive material has to be processed and the impressive thermal and photochemical long-term stability of the devices is achieved. Herein, a...

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Hauptverfasser: Lucas, Sebastian (VerfasserIn) , Kammerer, Jochen (VerfasserIn) , Pfannmöller, Martin (VerfasserIn) , Schröder, Rasmus R. (VerfasserIn) , He, Yakun (VerfasserIn) , Li, Ning (VerfasserIn) , Brabec, Christoph J. (VerfasserIn) , Leydecker, Tim (VerfasserIn) , Samorì, Paolo (VerfasserIn) , Marszalek, Tomasz (VerfasserIn) , Pisula, Wojchiech (VerfasserIn) , Mena-Osteritz, Elena (VerfasserIn) , Bäuerle, Peter (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: Jan 2021
In: Solar RRL
Year: 2021, Jahrgang: 5, Heft: 1, Pages: 1-16
ISSN:2367-198X
DOI:10.1002/solr.202000653
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/solr.202000653
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/solr.202000653
Volltext
Verfasserangaben:Sebastian Lucas, Jochen Kammerer, Martin Pfannmöller, Rasmus R. Schröder, Yakun He, Ning Li, Christoph J. Brabec, Tim Leydecker, Paolo Samorì, Tomasz Marszalek, Wojchiech Pisula, Elena Mena-Osteritz, and Peter Bäuerle
Beschreibung
Zusammenfassung:Single-material organic solar cells (SMOSCs) promise several advantages with respect to prospective applications in printed large-area solar foils. Only one photoactive material has to be processed and the impressive thermal and photochemical long-term stability of the devices is achieved. Herein, a novel structural design of oligomeric donor-acceptor (D-A) dyads 1-3 is established, in which an oligothiophene donor and fullerene acceptor are covalently linked by a flexible spacer of variable length. Favorable optoelectronic, charge transport, and self-organization properties of the D-A dyads are the basis for reaching power conversion efficiencies up to 4.26% in SMOSCs. The dependence of photovoltaic and charge transport parameters in these ambipolar semiconductors on the specific molecular structure is investigated before and after post-treatment by solvent vapor annealing. The inner nanomorphology of the photoactive films of the dyads is analyzed with transmission electron microscopy (TEM) and grazing-incidence wide-angle X-ray scattering (GIWAXS). Combined theoretical calculations result in a lamellar supramolecular order of the dyads with a D-A phase separation smaller than 2 nm. The molecular design and the precise distance between donor and acceptor moieties ensure the fundamental physical processes operative in organic solar cells and provide stabilization of D-A interfaces.
Beschreibung:Online veröffentlicht: 7. November 2020
Gesehen am 22.03.2024
Dedicated to Professor Franz Effenberger on the occasion of his 90th birthday
Beschreibung:Online Resource
ISSN:2367-198X
DOI:10.1002/solr.202000653

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