Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy

Freund, Sara and Hinaut, Antoine and Marinakis, Nathalie and Constable, Edwin C. and Meyer, Ernst and Housecroft, Catherine E. and Glatzel, Thilo. (2018) Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy. Beilstein Journal of Nanotechnology, 9. pp. 242-249.

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Official URL: https://edoc.unibas.ch/61101/

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The properties of metal oxides, such as charge transport mechanisms or optoelectronic characteristics, can be modified by functionalization with organic molecules. This kind of organic/inorganic surface is nowadays highly regarded, in particular, for the design of hybrid devices such as dye sensitized solar cells. However, a key parameter for optimized interfaces is not only the choice of the  compounds but also the properties of adsorption. Here, we investigated the deposition of an organic dye precursor molecule on a NiO(001) single crystal surface by means of non-contact atomic force microscopy at room temperature. Depending on the coverage, single molecules, groups of  adsorbates with random or recognizable shapes, or islands of closely packed molecules were identified. Single molecules and self assemblies are resolved with sub-molecular resolution showing that they are lying flat on the surface in a trans-conformation. Within the limits of our Kelvin probe microscopy setup a charge transfer from NiO to the molecular layer of 0.3 electrons per molecules was observed only in the areas, where the molecules are closed packed.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Freund, Sara and Marinakis, Nathalie and Hinaut, Antoine and Constable, Edwin Charles and Meyer, Ernst and Glatzel, Thilo
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 Apr 2019 10:57
Deposited On:28 Feb 2018 10:52

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