Dr. Parmod Kumar is an assistant professor in the Department of Physics at JC Bose University of Science and Technology, Faridabad, Haryana, India. Dr. Kumar earned his PhD from the IIT Delhi, India and also worked as DST-INSPIRE Faculty. His research interests include dilute magnetic semiconductors, magnetic materials, and other oxide semiconductors. Jitendra Pal Singh is the Ramanujan Fellow at the Manav Rachna University, Faridabad, India. His research interests are irradiation studies in nanoferrites, thin films, and magnetic multilayers, including the synthesis of ferrite nanoparticles and thin films, determining the magnetic, optical, and dielectric response of ferrites, and irradiation and implantation effects in ferrite thin films and nanoparticles.Vinod Kumar is an Assistant Professor in Renewable Energy and Coordinator of the MSc Renewable Energy Technology (RENT) program in the Department of Physics at The University of the West Indies, Saint Augustine, Trinidad and Tobago. His primary research interests include oxide-based nanomaterials, dye-sensitized solar cells, perovskite and organic solar cells, photon management in solar cells, and the development of advanced materials for WLEDs.