1. Department of Semiconductor Electronics, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine
2. Department of Computer-Aided Design Systems, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine
3. Department of Applied Physics and Nanomaterials Science, Lviv Polytechnic National University, 12 Bandery str., 79013 Lviv, Ukraine
4. University of Angers, MOLTECH-Anjou Laboratory, MR CNRS 6200, 2 bd Lavoisier, 49045 Angers, France