1. Hamburg University of Technology
2. Institution Advanced Ceramics
3. 21073 Hamburg
4. Germany
5. Bielefeld University
6. Faculty of Physics
7. Institution of Thin Films & Physics of Nanostructures
8. Universitätsstrasse 25
9. 33615 Bielefeld
10. Faculty of Chemistry
11. Physical Chemistry and Center for Molecular Materials
12. Institution of Inorganic Chemistry