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dc.contributor.authorSong, Xin
dc.contributor.authorGasparini, Nicola
dc.contributor.authorBaran, Derya
dc.date.accessioned2017-12-04T11:40:28Z
dc.date.available2017-12-04T11:40:28Z
dc.date.issued2017-11-27
dc.identifier.citationSong X, Gasparini N, Baran D (2017) The Influence of Solvent Additive on Polymer Solar Cells Employing Fullerene and Non-Fullerene Acceptors. Advanced Electronic Materials: 1700358. Available: http://dx.doi.org/10.1002/aelm.201700358.
dc.identifier.issn2199-160X
dc.identifier.doi10.1002/aelm.201700358
dc.identifier.urihttp://hdl.handle.net/10754/626273
dc.description.abstractSmall-molecule-based non-fullerene acceptors (NFAs) are emerging as a new field in organic photovoltaics, due to their structural versatility, the tunability of their energy levels, and their ease of synthesis. High-efficiency polymer donors have been tested with these non-fullerene acceptors in order to further boost the efficiency of organic solar cells. Most of the polymer:fullerene systems are optimized with solvent additives for high efficiency, while little attention has been paid to NFA-based solar cells so far. In this report, the effect of the most common additive, 1,8-diiodooctane (DIO), on PTB7-Th:PC71BM solar cells is investigated and it is compared with non-fullerene acceptor 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno-[1,2-b:5,6b′]di-thiophene (ITIC) devices. It is interesting that the high boiling solvent additive does have a negative impact on the power conversion efficiency when PTB7-Th is blended with ITIC acceptor. The solar cell devices are studied in terms of their optical, photophysical, and morphological properties and find out that PTB7-Th:ITIC devices with DIO results in coarser domains, reduced absorption strength, and slightly lower mobility, while DIO improves the absorption strength of the PTB7-Th:PC71BM blend film and increase the aggregation of PC71BM in the blend, resulting in higher fill factor and Jsc.
dc.description.sponsorshipWe acknowledge KAUST Solar Center Competitive Fund (CCF) for financial support.
dc.publisherWiley
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/aelm.201700358/full
dc.rightsThis is the peer reviewed version of the following article: The Influence of Solvent Additive on Polymer Solar Cells Employing Fullerene and Non-Fullerene Acceptors, which has been published in final form at http://doi.org/10.1002/aelm.201700358. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.titleThe Influence of Solvent Additive on Polymer Solar Cells Employing Fullerene and Non-Fullerene Acceptors
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Electronic Materials
dc.eprint.versionPost-print
kaust.personSong, Xin
kaust.personGasparini, Nicola
kaust.personBaran, Derya
refterms.dateFOA2018-11-27T00:00:00Z


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