1. Łukasiewicz Research Network-Institute of Electron Technology, Al.Lotników 32/46, 02-668 Warsaw, Poland
2. Institute of Physics, Silesian University of Technology, ul. Konarskiego 22B, 44-100 Gliwice, Poland
3. Warsaw University of Technology, Institute of Microelectronics and Optoelectronics, ul. Koszykowa 75, 00-662 Warsaw, Poland