1. Nano Research Laboratory, Baku State University, 23 Academik Zahid Khalilov Street, Baku AZ 1148, Azerbaijan
2. INFN—Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044 Frascati, Italy
3. Institute of Physics, Azerbaijan National Academy of Science, H. Javid av. 131, Baku AZ 1143, Azerbaijan
4. Institute of Catalysis and Inorganic Chemistry, Azerbaijan National Academy of Science, H. Javid av.131, Baku AZ 1143, Azerbaijan