1. Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
2. Institute of Physics of the Czech Academy of Sciences, Prague 18220, Czech Republic
3. Department of Microelectronics, Faculty of Electrical Engineering, Czech Technical University, Prague 16627, Czech Republic
4. Central Laboratories, University of Chemistry and Technology, Prague 16628, Czech Republic
5. Department of Power Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
6. Department of Inorganic Chemistry, University of Chemistry and Technology, Prague 16628, Czech Republic
7. Centre for Nanomaterials and Biotechnology, J. E. Purkyne University, Usti nad Labem 40096, Czech Republic