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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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Uddin, Ashraf
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2022Increased Efficiency of Organic Solar Cells by Seeded Control of the Molecular Morphology in the Active Layercitations
- 2017Controlled Ostwald ripening mediated grain growth for smooth perovskite morphology and enhanced device performancecitations
- 2017Interfacial engineering of hole transport layers with metal and dielectric nanoparticles for efficient perovskite solar cellscitations
- 2016Analysis of burn-in photo degradation in low bandgap polymer PTB7 using photothermal deflection spectroscopycitations
- 2016Effect of blend composition on ternary blend organic solar cells using a low band gap polymercitations
- 2015Effect of blend composition on binary organic solar cells using a low band gap polymercitations
- 2014Enhancement of ternary blend organic solar cell efficiency using PTB7 as a sensitizercitations
Places of action
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article
Enhancement of ternary blend organic solar cell efficiency using PTB7 as a sensitizer
Abstract
<p>We demonstrate a significant improvement of power conversion efficiency (PCE) by the addition of the polymer Poly[[4.8-bis[(2-ethylhexyl)oxy]benzo[1,2- b:4,5-b′] dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b] thio-phenediyl]] (PTB7) to a Poly[2,1,3-benzothiadiazole-4,7-diyl [4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b′]dithiophene-2,6-diyl]] (PCPDTBT) and [6,6]-phenyl C71 butyric acid methyl ester (PC<sub>71</sub>BM) host system, to form a ternary blend bulk heterojunction solar cell. This is the first reported investigation using PTB7 in a ternary system. The PTB7 concentration was varied from 1 to 9 wt% in the host system. In this ternary blend system, PTB7 works as a sensitizer and greatly enhances the optical performance. We demonstrate that positive charge from PCPDTBT is transferred to PTB7, which acts as an efficient charge transport matrix. The addition of 5 wt% PTB7 caused the highest improvement of average PCE, 28%, with reference to the binary PCPDTBT:PC<sub>71</sub>BM cell. The improved device performance is related to both the sensitized response over a large wavelength region and improved charge carrier transport.</p>