Member, American Ceramic Society.
Nanocrystalline Titanium Oxide Electrodes for Photovoltaic Applications
Article first published online: 21 JAN 2005
Journal of the American Ceramic Society
Volume 80, Issue 12, pages 3157–3171, December 1997
How to Cite
Barbé, C. J., Arendse, F., Comte, P., Jirousek, M., Lenzmann, F., Shklover, V. and Grätzel, M. (1997), Nanocrystalline Titanium Oxide Electrodes for Photovoltaic Applications. Journal of the American Ceramic Society, 80: 3157–3171. doi: 10.1111/j.1151-2916.1997.tb03245.x
C. J. Brinker—contributing editor
Supported by the Swiss National Science Foundation and the Institut fü An-gewandte Photovoltaik (Gelsenkirschen, Germany).
- Issue published online: 21 JAN 2005
- Article first published online: 21 JAN 2005
- Manuscript No. 191723. Received June 24, 1996; approved March 31, 1997.
During the past five years, we have developed in our laboratory a new type of solar cell that is based on a photoelectrochemical process. The light absorption is performed by a monolayer of dye (i.e., a Ruthenium complex) that is adsorbed chemically at the surface of a semiconductor (i.e., titanium oxide (TiO2)). When excited by a photon, the dye has the ability to transfer an electron to the semiconductor. The electric field that is inside the material allows extraction of the electron, and the positive charge is transferred from the dye to a redox mediator that is present in solution. A respectable photovoltaic efficiency (i.e., 10%) is obtained by the use of mesoporous, nanostructured films of anatase particles. We will show how the TiO2 electrode microstructure influences the photovoltaic response of the cell. More specifically, we will focus on how processing parameters such as precursor chemistry, temperature for hydrothermal growth, binder addition, and sintering conditions influence the film porosity, pore-size distribution, light scattering, and electron percolation and consequently affect the solar-cell efficiency.