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Electrochemical studies of the Co(III)/Co(II)(dbbip)(2) redox couple as a mediator for dye-sensitized nanocrystalline solar cells


Reference:

Cameron, P. J., Peter, L. M., Zakeeruddin, S. M. and Gratzel, M., 2004. Electrochemical studies of the Co(III)/Co(II)(dbbip)(2) redox couple as a mediator for dye-sensitized nanocrystalline solar cells. Coordination Chemistry Reviews, 248 (13-14), pp. 1447-1453.

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Abstract

The electrochemical properties of the redox mediator Co(III)/Co(II)(dbbip)(2) (dbbip = 2,6-bis(1'-butylbenzimidazol-2'-yl)pyridine) in a mixed acetonitrile/ethylene carbonate solvent have been studied by a range of techniques in order to determine the rate constants for electron transfer and the diffusion coefficients of the Co(II) and Co(III) species. Platinum, gold, fluorine-doped tin oxide (FTO) and compact TiO2 layers were used as electrode materials. The results have been used to predict the limitations imposed on the performance of dye-sensitized nanocrystalline cells by the electron transfer kinetics and mass transport properties of the redox mediator. The Co(III)/Co(II) redox mediator is compared with the conventional triiodide/iodide redox system used in high performance dye-sensitized solar cells. (C) 2004 Elsevier B.V. All rights reserved.

Details

Item Type Articles
CreatorsCameron, P. J., Peter, L. M., Zakeeruddin, S. M. and Gratzel, M.
DOI10.1016/j.ccr.2004.02.010
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code4932
Additional InformationID number: ISI:000224473900022

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