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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Riera-Galindo, Sergi
Institut de Ciència de Materials de Barcelona
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2024High Polymer Molecular Weight Yields Solar Cells with Simultaneously Improved Performance and Thermal Stabilitycitations
- 2020Doped Conjugated Polymer Enclosing a Redox Polymer : Wiring Polyquinones with Poly(3,4‐Ethylenedioxythiophene)citations
- 2020Sequential Doping of Ladder-Type Conjugated Polymers for Thermally Stable n-Type Organic Conductorscitations
- 2020Sequential Doping of Ladder-Type Conjugated Polymers for Thermally Stable n-Type Organic Conductorscitations
- 2019Impact of Singly Occupied Molecular Orbital energy on the n-doping efficiency of benzimidazole-derivativescitations
Places of action
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article
High Polymer Molecular Weight Yields Solar Cells with Simultaneously Improved Performance and Thermal Stability
Abstract
<jats:title>Abstract</jats:title><jats:p>Simple synthetic routes, high active layer thickness tolerance as well as stable organic solar cells are relentlessly pursued as key enabling traits for the upscaling of organic photovoltaics. Here, the potential to address these issues by tuning donor polymer molecular weight is investigated. Specifically, the focus is on PTQ10, a polymer with low synthetic complexity, with number average molecular weights of 2.4, 6.2, 16.8, 52.9, and 54.4 kDa, in combination with three different non‐fullerene acceptors, namely Y6, Y12, and IDIC. Molecular weight, indeed, unlocks a threefold increase in power conversion efficiency for these blends. Importantly, efficiencies above 10% for blade coated devices with thicknesses between 200 and 350 nm for blends incorporating high molecular weight donor are shown. Spectroscopic, GIWAXS and charge carrier mobility data suggest that the strong photocurrent improvement with molecular weight is related to both, improved electronic transport and polymer contribution to exciton generation. Moreover, it is demonstrated that solar cells based on high molecular weight PTQ10 are more thermally stable due to a higher glass transition temperature, thus also improving device stability.</jats:p>