Senior Researcher of the Laboratory of Energy Efficient Materials and Technologies, Belarusian State University (Belarus, 220030, Minsk, Nezavisimosti ave., 4); Researcher of the Center “Nanoelectronics and New Materials”, Belarusian State University of Informatics and Radioelectronics (Belarus, 220013, Minsk, Petrus Brovka st., 6)