L. A. Myroniuk I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine; Yuriy Fedkovych Chernivtsi National University Ukraine
D. V. Myroniuk I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine; Yuriy Fedkovych Chernivtsi National University Ukraine
E. V. Maistruk Yuriy Fedkovych Chernivtsi National University Ukraine
S. I. Kuryshchuk Yuriy Fedkovych Chernivtsi National University Ukraine
A. I. Ievtushenko I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine Ukraine
I. M. Danylenko V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine Ukraine
V. V. Strelchuk V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine Ukraine
I. P. Koziarskyi Yuriy Fedkovych Chernivtsi National University Ukraine