1. Department of Analysis of Functional Materials Institute of Physics of the CAS Na Slovance 2 18221 Prague 8 Czech Republic
2. Department of General Physics and Solid State Physics National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” pr. Peremohy 37 03056 Kyiv Ukraine
3. Department of Optics and Spectroscopy of Semiconductor and Dielectric Materials V.E. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine pr. Nauky 41 03028 Kyiv Ukraine
4. Department of Physical Principles for Alloying of Steels and Alloys G.V. Kurdyumov Institute for Metal Physics NAS of Ukraine 36 Academician Vernadsky Boulevard 03142 Kyiv Ukraine
5. School of Photonics ITMO University 49 Kronverkskiy Pr. St. Petersburg 197101 Russia
6. Department of Physics of Dielectrics and Semiconductors Ioffe Institute Politekhnicheskaya 26 St. Petersburg 194021 Russia