1. Laboratory of Nanomaterials and Systems for Renewable Energies (LaNSER), Research and Technology Centre of Energy (CRTEn), Borj Cedria Science and Technology Park, Hammam-Lif 2050, Tunisia
2. Faculty of Sciences of Tunis (FST), Campus Universitaire El Manar, University of Tunis El Manar, Tunis 2092, Tunisia
3. 2D Materials and Devices Group, International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
4. Department of Physics, University of Minho, 4710-057 Braga, Portugal
5. Center of Physics and Engineering of Advanced Materials, Laboratory for Physics of Materials and Emerging Technologies, Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal