Electrochemical Properties of Cu(II/I)-Based Redox Mediators for Dye-Sensitized Solar Cells
Ladislav Kavan, Yasemin Saygili, Marina Freitag, Shaik M. Zakeeruddin,, Anders Hagfeldt, Michael Gr\"atzel
TL;DR
This study investigates the electrochemical behavior of copper-based redox mediators with phenanthroline and bipyridine ligands in dye-sensitized solar cells, using cyclic voltammetry and impedance spectroscopy.
Contribution
It provides a comparative analysis of different Cu(II/I) redox mediators across various electrodes and electrolyte solutions, highlighting their electrochemical properties.
Findings
Cu(II/I)-phenanthroline and Cu(II/I)-bipyridine mediators exhibit distinct electrochemical behaviors.
Electrolyte composition influences the redox mediator performance.
Impedance spectroscopy reveals charge transfer characteristics of the mediators.
Abstract
Three Cu(II/I)-phenanthroline and Cu(II/I)-bipyridine redox mediators are studied on various electrodes and in variety of electrolyte solutions using cyclic voltammetry and impedance spectroscopy on symmetrical dummy cells.
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