1. Department of Physics, Faculty of Science and Engineering, The University of Nusa Cendana, Kupang, Indonesia
2. Laboratory of Advanced Science and Technologies, FPL, Abdelmalek Essaadi University, Tetouan, Morocco
3. Department of Chemistry, Faculty of Sciences Ben M'Sik, Laboratory of Chemistry and Physics of Materials LCPM, University Hassan II of Casablanca, Casablanca, Morocco
4. Department of Chemistry, Faculty of Science and Engineering, The University of Nusa Cendana, Kupang, Indonesia
5. Department of Physics Education, The University of Nusa Cendana, Kupang, Indonesia
6. Department of Mathematics, Faculty of Science and Engineering, The University of Nusa Cendana, Kupang, Indonesia