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PES Studies of Ru(dcbpyH2)2(NCS)2 Adsorption on Nanostructured ZnO for Solar Cell Applications
Department of Physics, University of Uppsala, Box 530, S-751 21 Uppsala, Sweden.
Department of Physics, University of Uppsala, Box 530, S-751 21 Uppsala, Sweden.
Department of Physics, University of Uppsala, Box 530, S-751 21 Uppsala, Sweden.
Department of Physical Chemistry, University of Uppsala, Box 532, S-751 21 Uppsala, Sweden.
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2002 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 106, no 39, 10102-10107 p.Article in journal (Refereed) Published
Abstract [en]

The interaction between the dye cis-bis(4,4‘-dicarboxy-2,2‘-bipyridine)-bis(isothiocyanato)-ruthenium(II), Ru(dcbpyH2)2(NCS)2, and nanostructured ZnO was investigated by photoelectron spectroscopy (PES) using synchrotron radiation. The results are compared with those of nanostructured TiO2 sensitized with the same dye, which to date is the most efficient system for dye-sensitized photoelectrochemical solar cells. When comparing the two metal oxides, differences in the surface molecular structure were observed both for low and high dye coverages, as seen by comparing the oxygen, nitrogen and sulfur signals. The origin of these differences is discussed in terms of substrate-induced dye aggregation and in variations in surface bonding geometries. The measurements also provide information concerning the energy matching between the orbitals of the dye and the ZnO valence band, which is of importance in photoinduced charge transfer.

Place, publisher, year, edition, pages
2002. Vol. 106, no 39, 10102-10107 p.
Keyword [en]
solar cells, nanostructured, ZnO, dye sensitization
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-50657DOI: 10.1021/jp0142177OAI: oai:DiVA.org:liu-50657DiVA: diva2:271844
Available from: 2009-10-13 Created: 2009-10-13 Last updated: 2017-12-12

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Publisher's full texthttp://pubs.acs.org/doi/abs/10.1021/jp0142177

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Ojamäe, Lars

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