1. NANOMISENE Laboratory, LR16CRMN01, Centre for Research on Microelectronics and Nanotechnology CRMN of Sousse Technopole, B.P. 334, Sahloul, Sousse, 4054, Tunisia
2. High School of Sciences and Technology of Hammam Sousse, University of Sousse, Tunisia
3. Department of Electronic Engineering, Universitat Rovira i Virgili, 43007 Tarragona, Spain
4. ICREA, Pg. Lluís Companys 23, Barcelona, Spain