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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
EDOT-diketopyrrolopyrrole copolymers for polymer solar cells
Abstract
<p>The photovoltaic properties of a series of diketopyrrolo[3,4-c]pyrrole (DPP) copolymers containing 3,4-ethylenedioxythiophene (EDOT) as a comonomer are reported. With use of different aryl flanking units on the DPP core, namely thiophene, pyridine or phenyl, optical gaps ranging from 1.91 eV to 1.13 eV are achieved. When blended with the fullerene derivative [6,6]-phenyl C<sub>71</sub>-butyric acid methyl ester (PC<sub>71</sub>BM), the thiophene-flanked copolymer PDPP[T]<sub>2</sub>-EDOT with an optical gap of 1.13 eV was found to have the best photovoltaic performance, with an efficiency of 2.5% in an inverted device architecture. Despite having the lowest open circuit voltage of the three polymers studied, PDPP[T]<sub>2</sub>-EDOT-based devices were able to achieve superior efficiencies due to the high short circuit current of up to ∼15 mA cm<sup>-2</sup>. PDPP[T]<sub>2</sub>-EDOT-based devices also exhibit higher external quantum efficiencies which are associated with a superior microstructure-as revealed by transmission electron microscopy (TEM) and grazing incidence wide-angle X-ray scattering (GIWAXS)-which is associated with the enhanced aggregation tendency of PDPP[T]<sub>2</sub>-EDOT chains. In particular PDPP[T]<sub>2</sub>-EDOT:PC<sub>71</sub>BM blends were found to have a finer phase separated morphology with superior thin-film crystallinity. Surface morphology was also investigated with atomic force microscopy and near-edge X-ray absorption fine-structure spectroscopy.</p>