An Alternative Efficient Redox Couple for the Dye‐Sensitized Solar Cell System
- 22 July 2003
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 9 (16), 3756-3763
- https://doi.org/10.1002/chem.200204577
Abstract
A series of new cobalt complexes [Co(LLL)2X2] were synthesized and evaluated as redox mediators for dye-sensitized nanocrystalline TiO2 solar cells. The structure of the ligand and the nature of the counterions were found to influence the photovoltaic performance. The one-electron-transfer redox mediator [Co(dbbip)2](ClO4)2 (dbbip = 2,6-bis(1′-butylbenzimidazol-2′-yl)pyridine) performed best among the compounds investigated. Photovoltaic cells incorporating this redox mediator yielded incident photon-to-current conversion efficiencies (IPCE) of up to 80 %. The overall yield of light-to-electric power conversion reached 8 % under simulated AM1.5 sunlight at 100 W m−2 intensity and more than 4 % at 1000 W m−2. Photoelectrodes coated with a 2 μm thick nanoporous layer and a 4 μm thick light-scattering layer, sensitized with a hydrophobic ruthenium dye, gave the best results.This publication has 42 references indexed in Scilit:
- Resonance Raman Scattering of a Dye-Sensitized Solar Cell: Mechanism of Thiocyanato Ligand ExchangeThe Journal of Physical Chemistry B, 2001
- Dye-Sensitized Photoelectrochemical Cell Using a Nanocomposite SiO2/Poly(Ethylene Glycol) Thin Film as Electrolyte Support. Characterization by Time-Resolved Luminescence and Conductivity MeasurementsThe Journal of Physical Chemistry B, 2001
- A new efficient photosensitizer for nanocrystalline solar cells: synthesis and characterization of cis-bis(4,7-dicarboxy-1,10-phenanthroline)dithiocyanato ruthenium(II)J. Chem. Soc., Dalton Trans., 2000
- Thermal stability of cis-dithiocyanato(2,2′-bipyridyl4,4′dicarboxylate) ruthenium(II) photosensitizer in the free form and on nanocrystalline TiO2 filmsThermochimica Acta, 2000
- A dye sensitized TiO2 photovoltaic cell constructed with an elastomeric electrolyteSolar Energy Materials and Solar Cells, 2000
- The photovoltaic stability of, bis(isothiocyanato)rlutheniurn(II)‐bis‐2, 2′bipyridine‐4, 4′‐dicarboxylic acid and related sensitizersAdvanced Materials, 1997
- On the relevance of mass transport in thin layer nanocrystalline photoelectrochemical solar cellsSolar Energy Materials and Solar Cells, 1996
- Efficient photosensitization of nanocrystalline TiO2 films by tannins and related phenolic substancesJournal of Photochemistry and Photobiology A: Chemistry, 1996
- Hydrophobic, Highly Conductive Ambient-Temperature Molten SaltsInorganic Chemistry, 1996
- Synthesis of some imidazole‐ and pyrazole‐ derived chelating agentsJournal of Heterocyclic Chemistry, 1981