1. Laboratory
of Optical Materials and Structures, Rzhanov Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia
2. Tomsk State University, Tomsk 634050, Russia
3. Boreskov Institute of Catalysis, SB RAS, 630090 Novosibirsk, Russia
4. Physical
Department, Novosibirsk State University, 630090 Novosibirsk, Russia
5. Laboratory
of Crystal Chemistry, Nikolaev Institute of Inorganic Chemistry, SB RAS, 630090 Novosibirsk, Russia
6. Laboratory
of Silicon Material Science, Rzhanov Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia