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

P J Cameron, L M Peter, S M Zakeeruddin, M Gratzel

Research output: Contribution to journalArticle

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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.
LanguageEnglish
Pages1447-1453
Number of pages7
JournalCoordination Chemistry Reviews
Volume248
Issue number13-14
DOIs
StatusPublished - 2004

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Solar cells
Coloring Agents
Electron transport properties
Fluorine
Electrons
Iodides
Platinum
Electrochemical properties
Gold
Rate constants
Mass transfer
Electrodes
Kinetics
Oxidation-Reduction

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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. / Cameron, P J; Peter, L M; Zakeeruddin, S M; Gratzel, M.

In: Coordination Chemistry Reviews, Vol. 248, No. 13-14, 2004, p. 1447-1453.

Research output: Contribution to journalArticle

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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.",
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AU - Gratzel, M

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AB - 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.

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