3,4-Ethylenedioxythiophene-based cobalt complex: An efficient co-mediator in dye-sensitized solar cells with poly(3,4-ethylenedioxythiophene) counter-electrode

Koussi-Daoud, S.Schaming, D.Fillaud, L.Trippé-Allard, G.Lafolet, F.Polanski, E.Nonomura, K.Vlachopoulos, N.Hagfeldt, A.Lacroix, J.-C.2015-10-192015-10-192015-10-19201510.1016/j.electacta.2015.04.173https://infoscience.epfl.ch/handle/20.500.14299/119897WOS:000362292200031© 2015 Elsevier Ltd. All rights reserved. A mixture of Co(phen)3+/2+ and Co(EtPy)3+/2+ complexes, where EtPy is a terpyridine ligand bearing an 3,4- ethylenedioxythiophene (EDOT) substituent, has been used as redox mediator in dye-sensitized solar cells. This combination of cobalt complexes allows an electron cascade leading to enhanced cell efficiency. To explain this result, we propose a synergy between the EDOT-functionalized cobalt complex and the PEDOT counter-electrode, which favors electron transfer and reduces recombination.Dye-sensitized solar cellscobalt shuttleEDOT ligandPEDOT3,4-Ethylenedioxythiophene-based cobalt complex: An efficient co-mediator in dye-sensitized solar cells with poly(3,4-ethylenedioxythiophene) counter-electrodetext::journal::journal article::research article