Sensitization of Nanocrystalline TiO2 with Black Absorbers Based on Os and Ru Polypyridine Complexes
- 15 October 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (44), 15342-15343
- https://doi.org/10.1021/ja053438d
Abstract
New metal complexes of the type [M(H3tcterpy)LY]+ (where M = Os(II) or Ru(II), L = substituted or unsubstituted bipyridine or pyridylquinoline, and Y = Cl-, I-, or SCN-) have been designed, synthesized, and characterized in view of their application for dye-sensitized solar cells (DSSCs). The Os dyes show a very broad absorption, and correspondingly, the DSSCs show an unprecedented spectral response in the NIR, with an onset at 1100 nm, reaching values of about 50% at 900 nm. The integrated photocurrent of some of such Os dyes is similar to that of the well-known [Ru(Htcterpy)(NCS)3](TBA) and superior to that of the [Ru(Hdcbpy)2(NCS)2](TBA)2 sensitizer. The Ru dyes show absorption and DSSC spectral response between those of the red and black dyes. Their advantage is their potential superior stability due to the reversible oxidative electrochemistry.Keywords
This publication has 12 references indexed in Scilit:
- Porous Silicon Photonic Crystals as Encoded MicrocarriersAdvanced Materials, 2004
- Design of molecular dyes for application in photoelectrochemical and electrochromic devices based on nanocrystalline metal oxide semiconductorsCoordination Chemistry Reviews, 2004
- Transient Absorption Spectroscopy of Ruthenium and Osmium Polypyridyl Complexes Adsorbed onto Nanocrystalline TiO2 PhotoelectrodesThe Journal of Physical Chemistry B, 2002
- CoII(dbbip)22+Complex Rivals Tri-iodide/Iodide Redox Mediator in Dye-Sensitized Photovoltaic CellsThe Journal of Physical Chemistry B, 2001
- Engineering of Efficient Panchromatic Sensitizers for Nanocrystalline TiO2-Based Solar CellsJournal of the American Chemical Society, 2001
- Electron Transfer Dynamics in Nanocrystalline Titanium Dioxide Solar Cells Sensitized with Ruthenium or Osmium Polypyridyl ComplexesThe Journal of Physical Chemistry B, 2000
- The Limiting Role of Iodide Oxidation in cis-Os(dcb)2(CN)2/TiO2 Photoelectrochemical CellsThe Journal of Physical Chemistry B, 1998
- Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodesJournal of the American Chemical Society, 1993
- Ru(II) polypyridine complexes: photophysics, photochemistry, eletrochemistry, and chemiluminescenceCoordination Chemistry Reviews, 1988
- Photochemistry of metal coordination complexes: metal to ligand charge transfer excited statesPure and Applied Chemistry, 1986