| 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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Ackermann, Jörg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Ternary Polymer Solar Cells: Impact of Non-Fullerene Acceptors on Optical and Morphological Propertiescitations
- 2023Star-shape non-fullerene acceptor featuring an aza-triangulene core for organic solar cellscitations
- 2023Star-shape non-fullerene acceptor featuring an aza-triangulene core for organic solar cellscitations
- 2023Towards efficient NFA-based selective near-infrared organic photodetectors: impact of thermal annealing of polymer blendscitations
- 2022Improved ultraviolet stability of fullerene-based organic solar cells through light-induced enlargement and crystallization of fullerene domainscitations
- 2022Synthesis and Electron Accepting Properties of Two Di(benz[f]indenone)-Fused Tetraazaanthracene Isomerscitations
- 2022High-Efficiency Digital Inkjet-Printed Non-Fullerene Polymer Blends Using Non-Halogenated Solventscitations
- 2020Robust transparent conducting electrode based on silver nanowire coating on polyelectrolytes multilayerscitations
- 2019A new antimony-based organic-inorganic hybrid material as electron extraction layer for efficient and stable polymer solar cellscitations
- 2019A new antimony-based organic-inorganic hybrid material as electron extraction layer for efficient and stable polymer solar cellscitations
- 2017P-type semiconductor surfactant modified zinc oxide nanorods for hybrid bulk heterojunction solar cellscitations
- 2017Toward High-Temperature Stability of PTB7-Based Bulk Heterojunction Solar Cells: Impact of Fullerene Size and Solvent Additivecitations
- 2017Toward High-Temperature Stability of PTB7-Based Bulk Heterojunction Solar Cells: Impact of Fullerene Size and Solvent Additivecitations
- 2016Effect of ZnO nanoparticles on the photochemical and electronic stability of P3HT used in polymer solar cellscitations
- 2016Effect of ZnO nanoparticles on the photochemical and electronic stability of P3HT used in polymer solar cellscitations
- 2016Insight about electrical properties of low-temperature solution-processed Al-doped ZnO nanoparticle based layers for TFT applicationscitations
- 2016Insight about electrical properties of low-temperature solution-processed Al-doped ZnO nanoparticle based layers for TFT applicationscitations
- 2016Ligand-Free Synthesis of Aluminum-Doped Zinc Oxide Nanocrystals and their Use as Optical Spacers in Color-Tuned Highly Efficient Organic Solar Cellscitations
- 2016Ligand-Free Synthesis of Aluminum-Doped Zinc Oxide Nanocrystals and their Use as Optical Spacers in Color-Tuned Highly Efficient Organic Solar Cellscitations
- 2016Ligand-free synthesis of aluminum-doped zinc oxide nanocrystals and their use as optical spacers in color-tuned highly efficient organic solar cellscitations
- 2013A star-shaped molecule as hole transporting material in solution-processed thin-film transistorscitations
- 2012A New Active Organic Component for Flexible Ammonia Gas Sensorscitations
Places of action
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article
Star-shape non-fullerene acceptor featuring an aza-triangulene core for organic solar cells
Abstract
We present the simple synthesis of a star-shape non-fullerene acceptor (NFA) for application in organic solar cells. This NFA possesses a D(A)3 structure in which the electron-donating core is an aza-triangulene unit and we report the first crystal structure for a star shape NFA based on this motive. We fully characterized this molecule’s optoelectronic properties in solution and thin films, investigating its photovoltaic properties when blended with PTB7-Th as the electron donor component. We demonstrate that the aza-triangulene core leads to a strong absorption in the visible range with an absorption edge going from 700 nm in solution to above 850 nm in the solid state. The transport properties of the pristine molecule were investigated in field effect transistors (OFETs) and in blends with PTB7-Th following a Space-Charge-Limited Current (SCLC) protocol. We found that the mobility of electrons measured in films deposited from o-xylene and chlorobenzene are quite similar (up to 2.70 x 10$^{-4}$ cm$^2$ V$^{-1}$ s$^{-1}$) and that the values are not significantly modified by thermal annealing. The new NFA combined with PTB7-Th in the active layer of inverted solar cells leads to a power conversion efficiency of around 6.3% (active area 0.16 cm$^2$ ) when processed from non-chlorinated solvents without thermal annealing. Thanks to impedance spectroscopy measurements performed on the solar cells, we show that the charge collection efficiency of the devices is limited by the transport properties rather than by recombination kinetics. Finally, we investigated the stability of this new NFA in various conditions and show that the star-shape molecule is more resistant against photolysis in the presence and absence of oxygen than ITIC.