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Using Solubility Parameters to Model More Environmetally Friendly Solvent Blends for Organic Solar Cell Active Layers
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013). (SOLA)ORCID iD: 0000-0003-2995-3692
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013). (SOLA)ORCID iD: 0000-0002-0995-3823
2019 (English)In: Materials, ISSN 1996-1994, Vol. 12, p. 3889-3901Article in journal (Refereed) Published
Abstract [en]

To facilitate industrial applications, as well as for environmental and health purposes, there is a need to find less hazardous solvents for processing the photoactive layer of organic solar cells. As there are vast amounts of possibilities to combine organic solvents and solutes, it is of high importance to find paths to discriminate among the solution chemistry possibilities on a theoretical basis. Using Hansen solubility parameters (HSP) offers such a path. We report on some examples of solvent blends that have been found by modelling HSP for an electron donor polymer (TQ1) and an electron acceptor polymer (N2200) to match solvent blends of less hazardous solvents than those commonly used. After the theoretical screening procedure, solubility tests were performed to determine the HSP parameters relevant for the TQ1:N2200 pair in the calculated solvent blends. Finally, thin solid films were prepared by spin-coating from the solvent blends that turned out to be good solvents to the donor-acceptor pair. Our results show that the blend film morphology prepared in this way is similar to those obtained from chloroform solutions.

Place, publisher, year, edition, pages
Basel, Switzerland: MDPI, 2019. Vol. 12, p. 3889-3901
Keywords [en]
organic solar cells; Hansen solubility parameters; solvent blends; solubility
National Category
Physical Chemistry
Research subject
Chemistry
Identifiers
URN: urn:nbn:se:kau:diva-75827DOI: 10.3390/ma12233889OAI: oai:DiVA.org:kau-75827DiVA, id: diva2:1372899
Funder
Knut and Alice Wallenberg Foundation, 2016.0059Swedish National Space Board, 185/17Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2019-11-25

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Publisher's full texthttps://www.mdpi.com/1996-1944/12/23/3889

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Jalan, Ishitavan Stam, Jan
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