1. Department
of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland
2. Catalonia Energy Research Institute - IREC, Sant Adria de Besos, Jardins de les Dones de Negre n.1,
Pl. 2, 08930 Barcelona, Spain
3. Department
of Electronics and Computing, Sumy State University, 2 Rymskogo-Korsakova
st., 40007 Sumy, Ukraine
4. Materials Physics & Applications Division: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
5. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain