Relationship between Energetic Disorder and Reduced Recombination of Free Carriers in Organic Solar Cells
Abstract: Reducing non‐radiative recombination is key to achieve high fill factors (FFs) in organic solar cells. While it is generally accepted that recombination proceeds via charge transfer (CT) states at the donor:acceptor interface, the underlying principles that dictate the decay kinetics of these CT states are not yet well understood. Here, a study on the effect of energetic disorder is presented. Based on a data set of 10 representative donor:acceptor blends, clear correlations between disorder, the recombination coefficient of free charge carriers, and the non‐radiative voltage loss are found. It is suggested that a narrower distribution of CT energies leads to a longer CT decay time and thus reduces non‐radiative losses. This leads to a simultaneous improvement of the FF and open circuit voltage and highlights the importance of having materials with low energetic disorder on the way to the commercialisation of organic photovoltaics.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Relationship between Energetic Disorder and Reduced Recombination of Free Carriers in Organic Solar Cells ; day:05 ; month:01 ; year:2023 ; extent:8
Advanced energy materials ; (05.01.2023) (gesamt 8)
- Urheber
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Hosseini, Seyed Mehrdad
Wilken, Sebastian
Sun, Bowen
Huang, Fei
Jeong, Sang Young
Woo, Han Young
Coropceanu, Veaceslav
Shoaee, Safa
- DOI
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10.1002/aenm.202203576
- URN
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urn:nbn:de:101:1-2023010614013789207439
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:23 MESZ
Datenpartner
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Beteiligte
- Hosseini, Seyed Mehrdad
- Wilken, Sebastian
- Sun, Bowen
- Huang, Fei
- Jeong, Sang Young
- Woo, Han Young
- Coropceanu, Veaceslav
- Shoaee, Safa