1. Department of Semiconductor Electronics and Physics of Semiconductors, National University of Science and Technology MISiS, Moscow 119049, Russia
2. Ioffe Institute, 26 Politekhnicheskaya, Saint Petersburg 194021, Russia
3. Perfect Crystals LLC, 28 Politekhnicheskaya, Saint Petersburg 194064, Russia
4. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Science, Chernogolovka 142432, Russia
5. Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611
6. Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611
7. Department of Chemical and Biological Engineering, Korea University, Seoul 02841, South Korea