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Molecular Scale Characterization of the Titania-Dye-Solvent Interface in Dye-Sensitized Solar Cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry (closed 20110630).
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry (closed 20110630).
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2010 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 26, no 12, 9612-9616 p.Article in journal (Refereed) Published
Abstract [en]

Charge separation at the dye/titania interface in dye sensitized solar cells is strongly influenced by the thickness and homogeneity of the sensitizing dye layer, as this controls the potential drop across the interface, and the probability of an excited electron being transferred from the dye to the titania. In this study we use atomic force microscopy and the depth profiling method neutral impact collision ion scattering spectroscopy (NICISS) to investigate the thickness and homogeneity of N719 dye adsorbed to titania before and after rinsing with pure acetonitrile. Both experimental methods show that the dye layers are closed but inhomogencous. Inhomogeneity is more pronounced for unrinsed samples.

Place, publisher, year, edition, pages
2010. Vol. 26, no 12, 9612-9616 p.
Keyword [en]
SURFACTANT ADSORPTION, TIO2 FILMS, PERFORMANCE, STABILITY
National Category
Chemical Sciences
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URN: urn:nbn:se:kth:diva-27537DOI: 10.1021/la100193wISI: 000278427600063Scopus ID: 2-s2.0-78751662932OAI: oai:DiVA.org:kth-27537DiVA: diva2:379247
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QC 20150716

Available from: 2010-12-17 Created: 2010-12-13 Last updated: 2017-12-11Bibliographically approved

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