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Energy transfer in aqueously dispersed organic semiconductor nanoparticles

Organic photovoltaics (OPVs) hold promise for a cost-effective, eco-friendly, and sustainable technology to harvest solar energy. However, the widespread application of OPVs has been hindered mostly due to their intrinsic narrow absorption band and environmental impacts caused by toxic solvents requ...

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Main Authors: Roozbeh, Ashkan (Author) , Bassi, Maiara de Jesus (Author) , Pereira, Adriano Bezerra (Author) , Roman, Lucimara Stolz (Author) , Buckup, Tiago (Author) , Heisler, Ismael A. (Author)
Format: Article (Journal)
Language:English
Published: December 15, 2020
In: The journal of physical chemistry. C, Energy, materials, and catalysis
Year: 2020, Volume: 124, Issue: 51, Pages: 27946-27953
ISSN:1932-7455
DOI:10.1021/acs.jpcc.0c09459
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.jpcc.0c09459
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Author Notes:Ashkan Roozbeh, Maiara de Jesus Bassi, Adriano Bezerra Pereira, Lucimara Stolz Roman, Tiago Buckup, and Ismael A. Heisler
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Summary:Organic photovoltaics (OPVs) hold promise for a cost-effective, eco-friendly, and sustainable technology to harvest solar energy. However, the widespread application of OPVs has been hindered mostly due to their intrinsic narrow absorption band and environmental impacts caused by toxic solvents required during the synthesis. In this work, we investigated energy transfer dynamics in water-dispersed polymeric nanoparticles (NPs) of F8T2, MDMO-PPV, and their mixtures (bicomponent) synthesized by the miniemulsion technique. Using femtosecond transient absorption and time-resolved fluorescence spectroscopy, we showed that Förster resonance energy transfer (FRET) can be promoted in the bicomponent NPs on an ultrafast time scale and modulated upon the variation in polymer concentrations. The higher FRET efficiency achieved for the bicomponent NPs compared to reports for single-component donor-acceptor systems implies that this design strategy may be utilized in primary building blocks of ternary architecture. Our results suggest that the water-dispersed polymeric bicomponent NP of F8T2/MDMO-PPV is a promising candidate to be incorporated in ternary structures of OPVs in combination with acceptors, such as fullerene C60, to extend the absorption band, increase the energy transfer efficiency, and facilitate exciton dissociation.
Item Description:Gesehen am 01.02.2021
Physical Description:Online Resource
ISSN:1932-7455
DOI:10.1021/acs.jpcc.0c09459

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