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Surface Molecular Quantification and Photoelectrochemical Characterization of Mixed Organic Dye and Coadsorbent Layers on TiO2 for Dye-Sensitized Solar Cells
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science, Surface and Interface Science.
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2010 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 114, no 27, 11903-11910 p.Article in journal (Refereed) Published
Abstract [en]

Different molecular layers on TiO2 were prepared by using the p-dimethylaniline triphenylamine based organic dye, D29, together with the coadsorbents decylphosphonic acid (DPA), dineohexyl bis(3,3-dimethylbutyl)phosphinic acid (DINHOP), and chenodeoxycholic acid (CDCA). The surface molecular structure of dye and coadsorbent layers on TiO2 was investigated by photoelectron spectroscopy (PES). A focus was to determine the surface molecular concentrations using characteristic photoelectron core levels. Dye-sensitized solar cells (DSCs) were prepared from the same substrate and were further characterized by photoelectrochemical methods. Together the investigation gives information on the arrangement of the mixed molecular layer and a first insight to the extent to which the coadsorbents exchange with dye molecules on the TiO2 surface for the examined conditions.

Place, publisher, year, edition, pages
2010. Vol. 114, no 27, 11903-11910 p.
National Category
Chemical Sciences Physical Sciences
URN: urn:nbn:se:uu:diva-128835DOI: 10.1021/jp102381xISI: 000279507900031OAI: oai:DiVA.org:uu-128835DiVA: diva2:331810
Available from: 2010-07-26 Created: 2010-07-26 Last updated: 2016-04-20Bibliographically approved

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Johansson, Erik M. J.Boschloo, GerritHagfeldt, AndersRensmo, Håkan
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Surface and Interface ScienceDepartment of Physical and Analytical ChemistryPhysical Chemistry
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