1. Institute of Physics, Yerevan State University, 1 Alex Manoogian st., Yerevan 0025, Armenia
2. Infochemistry Scientific Center, ITMO University, 9 Lomonosova st., Saint-Petersburg 191002, Russia
3. Innovation Center for Nanoscience and Technologies, A.B. Nalbandyan Institute of Chemical Physics NAS RA, 5/2 P. Sevak st., Yerevan 0014, Armenia