1. Center of Materials and Nanotechnologies (CEMNAT), Faculty of Chemical Technology, University of Pardubice, 530 02 Pardubice, Czech Republic
2. Department of Physical Electronics, Institute of Physics, Herzen State Pedagogical University of Russia, St. Petersburg 191186, Russia
3. Device Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Ibaraki, Japan
4. Faculty of Science and Technology, Department of Electronics and Electrical Engineering, Keio University, Yokohama 223-8522, Kanagawa, Japan
5. Electrical and Computer Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan S7N5A9, Canada