Calculation of the Energy Band Diagram of a Photoelectrochemical Water Splitting Cell
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Otros documentos de la autoría: Cendula, Peter; Tilley, S. David; Gimenez, Sixto; Bisquert, Juan; Schmid, Matthias; Grätzel, Michael; Schumacher, Jürgen O.
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Título
Calculation of the Energy Band Diagram of a Photoelectrochemical Water Splitting CellAutoría
Fecha de publicación
2014-11Editor
American Chemical SocietyCita bibliográfica
CENDULA, Peter, et al. Calculation of the Energy Band Diagram of a Photoelectrochemical Water Splitting Cell. The Journal of Physical Chemistry C, 2014, 118.51: 29599-29607.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/jp509719dVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
A physical model is presented for the semiconductor electrode of a photoelectrochemical cell. The model accounts for the potential drop in the Helmholtz layer and thus enables description of both band edge pinning and ... [+]
A physical model is presented for the semiconductor electrode of a photoelectrochemical cell. The model accounts for the potential drop in the Helmholtz layer and thus enables description of both band edge pinning and unpinning. The model is based on the continuity equations for charge carriers and direct charge transfer from the energy bands to the electrolyte. A quantitative calculation of the position of the energy bands and the variation of the quasi-Fermi levels in the semiconductor with respect to the water reduction and oxidation potentials are presented. Calculated photocurrent–voltage curves are compared with established analytical models and experimental data. Our model calculations are suitable to enhance understanding and improve the properties of semiconductors for photoelectrochemical water splitting. [-]
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J. Phys. Chem. C, 2014, 118 (51)Derechos de acceso
Copyright © 2014 American Chemical Society
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