1. Department of Physics, Faculty of Sciences, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
2. Laboratory of Energy and Environmental, University of Yaounde I, Yaounde, Cameroon
3. National Committee for Development of Technologies, Ministry of Scientific Research and Innovation, P.O. Box 1457, Yaounde, Cameroon
4. Department of Physics, Higher Teacher’s Training College, University of Yaounde I, P.O. Box 47, Yaounde, Cameroon
5. Laboratory of Applied Physics, University of Yaounde I, Yaounde, Cameroon
6. Department of Renewable Energy, National Advanced School of Engineering of Maroua, University of Maroua, P.O. Box 46, Maroua, Cameroon
7. Department of Energy Engineering, University Institute of Technology, University of Ngaoundere, P.O. Box 455, Ngaoundere, Cameroon
8. Laboratory of Analysis of Simulation and Testing, University of Ngaoundere, Ngaoundere, Cameroon