Modeling of Photovoltage and Photocurrent in Dye-Sensitized Titanium Dioxide Solar Cells. Ferber, J. & Luther, J. The Journal of Physical Chemistry B, 105(21):4895–4903, 2001. ![Modeling of Photovoltage and Photocurrent in Dye-Sensitized Titanium Dioxide Solar Cells [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex By means of two-dimensional simulation calculations, a detailed analysis of the nanocrystalline TiO2 dye-sensitized solar cell (DSC) has been performed. A simplified scheme of the nanoporous structure, which is treated as if the TiO2 film is a continuous medium, is used for modeling. On the basis of material parameters, the model permits the determination of steady-state charge-carrier distributions, the calculation of I−V curves under illumination, dark characteristics, and the spectral response of a DSC. The spatial resolution of the model allows for the answer to the question of the spatial distribution of both the electric and the electrochemical potential in the cell. Thus, a deeper insight into the operation mechanism of a DSC is obtained. Nonnegligible drift currents are found. It is shown quantitatively that the electric potential drops mainly at the TCO/TiO2 interface and not at a Helmholtz layer. The role of the dark interfacial electrical potential difference (built-in potential) for the function of a DSC is discussed. It is shown that, contrary to a conventional p−n junction solar cell, higher photovoltages than those of the dark interfacial electrical potential difference can be obtained.
@article{ferber_modeling_2001,
title = {Modeling of {Photovoltage} and {Photocurrent} in {Dye}-{Sensitized} {Titanium} {Dioxide} {Solar} {Cells}},
volume = {105},
url = {http://pubs.acs.org/doi/abs/10.1021/jp002928j},
doi = {10.1021/jp002928j},
abstract = {By means of two-dimensional simulation calculations, a detailed analysis of the nanocrystalline TiO2 dye-sensitized solar cell (DSC) has been performed. A simplified scheme of the nanoporous structure, which is treated as if the TiO2 film is a continuous medium, is used for modeling. On the basis of material parameters, the model permits the determination of steady-state charge-carrier distributions, the calculation of I−V curves under illumination, dark characteristics, and the spectral response of a DSC. The spatial resolution of the model allows for the answer to the question of the spatial distribution of both the electric and the electrochemical potential in the cell. Thus, a deeper insight into the operation mechanism of a DSC is obtained. Nonnegligible drift currents are found. It is shown quantitatively that the electric potential drops mainly at the TCO/TiO2 interface and not at a Helmholtz layer. The role of the dark interfacial electrical potential difference (built-in potential) for the function of a DSC is discussed. It is shown that, contrary to a conventional p−n junction solar cell, higher photovoltages than those of the dark interfacial electrical potential difference can be obtained.},
number = {21},
journal = {The Journal of Physical Chemistry B},
author = {Ferber, Jörg and Luther, Joachim},
year = {2001},
pages = {4895--4903}
}
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