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Long-range exciton diffusion in non-fullerene acceptors and coarse bulk heterojunctions enable highly efficient organic photovoltaics
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dc.contributor.author | Sajjad, Muhammad T. | |
dc.contributor.author | Ruseckas, Arvydas | |
dc.contributor.author | Jagadamma, Lethy Krishnan | |
dc.contributor.author | Zhang, Yiwei | |
dc.contributor.author | Samuel, Ifor D. W. | |
dc.date.accessioned | 2020-08-14T15:30:04Z | |
dc.date.available | 2020-08-14T15:30:04Z | |
dc.date.issued | 2020-07-21 | |
dc.identifier | 269606152 | |
dc.identifier | 062ee439-7d79-4561-9617-8b4ed8865bf6 | |
dc.identifier | 85089740413 | |
dc.identifier | 000560225400025 | |
dc.identifier.citation | Sajjad , M T , Ruseckas , A , Jagadamma , L K , Zhang , Y & Samuel , I D W 2020 , ' Long-range exciton diffusion in non-fullerene acceptors and coarse bulk heterojunctions enable highly efficient organic photovoltaics ' , Journal of Materials Chemistry , vol. 8 , no. 31 , pp. 15687-15694 . https://doi.org/10.1039/D0TA06017H | en |
dc.identifier.issn | 0959-9428 | |
dc.identifier.other | Bibtex: D0TA06017H | |
dc.identifier.other | ORCID: /0000-0001-9114-3522/work/78891581 | |
dc.identifier.other | ORCID: /0000-0002-4339-2484/work/78891813 | |
dc.identifier.uri | https://hdl.handle.net/10023/20468 | |
dc.description | Funding: We acknowledge support from the European Commission (European Research Council grant 321305) and Marie Sklodowska-Curie Individual Fellowship grant 745776. We are also grateful to EPSRC for support from grants (EP/L017008/1 and EP/L012294/1). | en |
dc.description.abstract | We investigated singlet exciton diffusion in three ITIC derivatives used as electron acceptors in organic photovoltaics (OPVs) by time-resolved photoluminescence volume quenching and exciton–exciton annihilation. The exciton diffusion coefficient was found to be in the range of 0.003–0.007 cm2 s−1 which leads to a three-dimensional exciton diffusion length of up to 31 nm. We fabricated solar cells using bulk heterojunctions of these acceptors with the electron donor PTB7-Th which showed ∼7% efficiency and large scale phase separation. Our results show that long range exciton diffusion and large domains offer significant advantages for OPVs. | |
dc.format.extent | 8 | |
dc.format.extent | 1298322 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of Materials Chemistry | en |
dc.subject | QC Physics | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | QD | en |
dc.title | Long-range exciton diffusion in non-fullerene acceptors and coarse bulk heterojunctions enable highly efficient organic photovoltaics | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Research Council | en |
dc.contributor.sponsor | European Commission | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Biophotonics | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1039/D0TA06017H | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | en | |
dc.identifier.grantnumber | 745776 | en |
dc.identifier.grantnumber | ep/l017008/1 | en |
dc.identifier.grantnumber | EP/L012294/1 | en |
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