Charge transport properties in dye-sensitized nanostructured TiO{sub 2} thin film electrodes studied by photoinduced current transients
- Uppsala Univ. (Sweden)
Dye-sensitized nanostructured TiO{sub 2} is a promising material for solar cell applications since it is expected to be produced at a relatively low cost and can give efficiencies of up to 10%. The charge transport in dye-sensitized nanostructured TiO{sub 2} was studied by laser pulse induced photocurrent transients. The experimental curves were compared to simulations using a diffusion model with an initial electron distribution of an exponential decay. The simulations were optimized with respect to the experimental curves giving an apparent diffusion coefficient of 6 {times} 10{sup {minus}6} cm{sup 2}/s for the electrons with an electrolyte of 0.1 M KI in propylene carbonate, the potential being +300 mV vs Ag/AgCl in ethanol. The charge transport was highly dependent on electrolyte composition and light intensity.
- OSTI ID:
- 335249
- Journal Information:
- Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical, Vol. 103, Issue 7; Other Information: PBD: 18 Feb 1999
- Country of Publication:
- United States
- Language:
- English
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