1. Department of Semiconductor Materials Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław 50-370, Poland
2. Saule Research Institute, Duńska 11, Wrocław 54-427, Poland
3. Łukasiewicz Research Network PORT Polish Center for Technology Development, Stabłowicka 147, Wrocław 54-066, Poland
4. Institute of Experimental Physics, University of Wrocław, Max Born Square 9, Wrocław 50-204, Poland
5. Department of Nanometrology, Wrocław University of Science and Technology, Janiszewskiego 11/17, Wrocław 50-372, Poland
6. Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, Warszawa 01-142, Poland