Bis(1,1-bis(2-pyridyl)ethane)copper(I/II) as an efficient redox couple for liquid dye-sensitized solar cellsShow others and affiliations
2016 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, 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
2016. Vol. 4, no 38, p. 14550-14554
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-13638DOI: 10.1039/C6TA06782DScopus ID: 2-s2.0-84989315761OAI: oai:DiVA.org:ri-13638DiVA, id: diva2:1033956
2016-10-102016-10-102023-06-05Bibliographically approved