| People | Locations | Statistics |
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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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Thelakkat, Mukundan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Controlling crystal orientation in films of conjugated polymers by tuning the surface energy
- 2024Design Principles of Diketopyrrolopyrrole‐Thienopyrrolodione Acceptor<sub>1</sub>–Acceptor<sub>2</sub> Copolymerscitations
- 2021Solid polymer nanocomposite electrolytes with improved interface properties towards lithium metal battery application at room temperaturecitations
- 2021Roadmap on organic-inorganic hybrid perovskite semiconductors and devicescitations
- 2020HOMO–HOMO Electron Transfer: An Elegant Strategy for p‐Type Doping of Polymer Semiconductors toward Thermoelectric Applicationscitations
- 2017Influence of fluorination on the microstructure and performance of diketopyrrolopyrrole‐based polymer solar cellscitations
- 2017Hybrid Photovoltaics – from Fundamentals towards Applicationcitations
- 2017Plasmonic nanomeshes: Their ambivalent role as transparent electrodes in organic solar cells
- 2017Influence of fluorination on the microstructure and performance of diketopyrrolopyrrole-based polymer solar cellscitations
- 2016EDOT-diketopyrrolopyrrole copolymers for polymer solar cellscitations
- 2016Azido-Functionalized Thiophene as a Versatile Building Block to Cross-Link Low-Bandgap Polymerscitations
- 2013Hierarchical orientation of crystallinity by block-copolymer patterning and alignment in an electric fieldcitations
- 2012Semiconductor amphiphilic block copolymers for hybrid donor-acceptor nanocompositescitations
- 2007Local potential distribution of macrophase separated polymer blend domainscitations
Places of action
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article
Influence of fluorination on the microstructure and performance of diketopyrrolopyrrole-based polymer solar cells
Abstract
<p>The solar cell performance and microstructure of DPP-based polymers with different degrees of fluorination are reported. DPP-based polymers with thiophene–phenyl–thiophene comonomer and thiophene flanking units are studied, with the degree of fluorination of the phenyl unit varied. With bifluorination of the phenyl ring, a higher open circuit voltage is achieved whilst maintaining or even improving the overall solar cell efficiency. While tetrafluorination leads to a further 0.1 V increase in V<sub>OC,</sub> reaching a high photo voltage of 0.81 V, overall solar cell performance significantly drops. Microstructural studies using AFM, TEM, Grazing incidence wide-angle X-ray scattering (GIWAXS), and Resonant soft X-ray scattering (R-SoXS) reveal that bifluorination largely preserves the microstructure of the nonfluorinated system, whereas tetrafluorination results in coarse phase separation between the polymer donor and the fullerene acceptor. Our results demonstrate that the use of an extended comonomer is a promising strategy for optimizing the beneficial effects of fluorination for DPP-based polymer solar cells, especially in improving the open circuit voltage.</p>