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Bis(1,1-bis(2-pyridyl)ethane)copper(i/II) as an efficient redox couple for liquid dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.ORCID iD: 0000-0001-8084-1181
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry. Dyenamo AB, Sweden.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
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2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 38, p. 14550-14554Article in journal (Refereed) Published
Abstract [en]

A new redox couple, [Cu(bpye)2]+/2+, has been synthesized, and applied in dye-sensitized solar cells (DSSCs). Overall efficiencies of 9.0% at 1 sun and 9.9% at 0.5 sun were obtained, which are considerably higher than those obtained for cells containing the reference redox couple, [Co(bpy)3]2+/3+. These results represent a record for copper-based complex redox systems in liquid DSSCs. Fast dye regeneration, sluggish recombination loss processes, faster electron self-exchange reactions and suitable redox potentials are the main reasons for the observed increase in efficiency. In particular, the main disadvantage of cobalt complex-based redox couples, charge-transport problems, appears to be resolved by a change to copper complex redox couples. The results make copper complex-based redox couples very promising for further development of highly efficient DSSCs.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2016. Vol. 4, no 38, p. 14550-14554
Keywords [en]
Cobalt compounds, Copper, Efficiency, Redox reactions, Solar cells, Cobalt complexes, Copper complexes, Dye regeneration, Electron self-exchange, Overall efficiency, Recombination loss, Redox potentials, Transport problems, Dye-sensitized solar cells
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-195535DOI: 10.1039/c6ta06782dISI: 000385360300005Scopus ID: 2-s2.0-84989315761OAI: oai:DiVA.org:kth-195535DiVA, id: diva2:1046779
Funder
Swedish Research Council Formas
Note

QC 20161115

Available from: 2016-11-15 Created: 2016-11-03 Last updated: 2017-11-29Bibliographically approved

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Kinschel, DominikDaniel, QuentinSvensson, Per H.

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