1. Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
2. Department of Physics, Condensed Matter Physics, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Staudtstrasse 3, 91058 Erlangen, Germany
3. Center for Nanoanalysis and Electron Microscopy (CENEM) and Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Cauerstrasse 3, 91058 Erlangen, Germany
4. Department for Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Egerlandstrasse 3, 91058 Erlangen, Germany
5. Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK 11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany