Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 4129004
Author(s) Freund, Sara; Hinaut, Antoine; Marinakis, Nathalie; Constable, Edwin C.; Meyer, Ernst; Housecroft, Catherine E.; Glatzel, Thilo
Author(s) at UniBasel Housecroft, Catherine
Freund, Sara
Marinakis, Nathalie
Hinaut, Antoine
Constable, Edwin Charles
Glatzel, Thilo
Meyer, Ernst
Year 2018
Title Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy
Journal Beilstein Journal of Nanotechnology
Volume 9
Pages / Article-Number 242-249
Keywords metal oxide, p-type semiconductor, NiO, sub-molecular resolution, non-contact atomic force microscopy
Abstract 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.
Publisher Beilstein-Institut
ISSN/ISBN 2190-4286
edoc-URL https://edoc.unibas.ch/61101/
Full Text on edoc Available
Digital Object Identifier DOI 10.3762/bjnano.9.26
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/29441269
ISI-Number 000423192700001
Document type (ISI) Journal Article
 
   

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