Dr Narottam Das received a B.Sc. Eng. (Hons.) degree in Electrical and Electronics from Chittagong University of Engineering and Technology, Bangladesh, in 1992; a M.Sc. Eng. degree in Electrical and Electronics from Bangladesh University of Engineering and Technology, Bangladesh, in 1996; and a Ph.D. degree in Electrical Engineering from Yamagata University, Japan, in 2000. His Ph.D. research project was funded by the Ministry of Education, Science, Sports and Culture of Japan (Japanese Government Scholarship). Currently, he is a Senior Lecturer at the School of Engineering and Technology (Melbourne Campus), CQUniversity Australia. He has published over 185 Journal and Conference papers. Dr. Das is a senior member of IEEE PES, Fellow of the IE Aust, CPEng, NER and Fellow of the IEB. Currently, Dr Das is a Guest Editor of MDPI “Energies” Special Issue on “Nano-structured Solar Cells” and Section Editor of the Renewable energies and PV Systems. Dr. Das is the editor of books “Nano-structured Solar Cells”, “Advances in Optical Communication”, “Optical Communications Systems” and “Optical Communication”, Intech Publisher, Vienna, Austria.