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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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Wright, Matthew
Teesside University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Assessing isometric hip strength in young professional soccer players: Does hip-flexion angle matter?
- 2023Towards a graphene transparent conducting electrode for perovskite/silicon tandem solar cellscitations
- 2023SiNx and AlOx nanolayers in hole selective passivating contacts for high efficiency silicon solar cellscitations
- 2023Design Considerations for the Bottom Cell in Perovskite / Silicon Tandems: An Industrial Perspectivecitations
- 2022Fitness testing in soccer revisitedcitations
- 2020Re‐evaluation of sodium aluminium silicate (E 554) and potassium aluminium silicate (E 555) as food additivescitations
- 2017Controlled Ostwald ripening mediated grain growth for smooth perovskite morphology and enhanced device performancecitations
- 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
Effect of blend composition on ternary blend organic solar cells using a low band gap polymer
Abstract
This work investigates the influence of blend composition in ternary blend bulk heterojunction organic solar cells composed of poly(3-hexylthiophene-2,5-diyl) (P3HT), poly[2,1,3-benzothiadiazole-4,7-diyl[4,4-bis(2-ethylhexyl)-4H-cyclopenta [2,1-b:3,4-b′]dithiophene-siloe 2,6-diyl]] (Si-PCPDTBT) and [6,6]-phenyl C71 butyric acid methyl ester (PC71BM). The use of the low band gap Si-PCPDTBT vastly improves the spectral response, when compared to a P3HT:PC71BM binary system. The optimum blend composition occurred at a total polymer concentration of 50 wt%. At low polymer concentrations, the P3HT phase was amorphous in nature. Increasing the polymer content led to the formation of crystalline polymer domains, as evidenced by XRD measurements. This significantly enhanced the charge carrier transport throughout the active layer. XPS depth profiles indicated that variations in the polymer content also influenced the mixing between the Si-PCPDTBT and the P3HT host matrix. This analysis showed that the 50 wt% was conducive to a larger interaction between the two polymers. A comprehensive analysis of the relative contributions of each molecule to the photoluminescence suggested that the polymer concentration not only affects the film microstructure, it also influences the photoluminescence quantum yield of the blend. This is caused by alterations to the recombination mechanisms occurring in the constituent materials, which, in turn, influences photocurrent generation. This result shows that the overall polymer content must be chosen carefully to strike a delicate balance between improved absorption and effective charge generation and collection.