Sanjay J. Dhoble is a Professor in the Department of Physics at Rashtrasant Tukadoji Maharaj Nagpur University, India. During his research career he has worked on the synthesis and characterization of solid-state lighting materials and phosphors for solar cell efficiency enhancement, as well as the development of radiation dosimetry phosphors, and the biosynthesis of nanoparticles and their applications. Yatish Ratn Parauha is an Assistant Professor in the Department of Physics at Ramdeobaba University, Nagpur, India. His research focuses on the synthesis and optical spectroscopy of various luminescent materials. In the field of rare earth-activated luminescent materials, his work involves fundamental research on applications in WLEDs, solar cells, thermoluminescent dosimeters, phototherapy, and display devices.N. Thejo Kalyani is an Assistant Professor in the Department of Physics at Laxminarayan Innovation Technological University, Nagpur, India. Her research interest includes the synthesis, characterization, and fabrication of OLED devices and displays using various organic complexes by vacuum deposition and solution techniques.Abhijeet R. Kadam is an Assistant Professor in the Department of Physics at CSMSS, Chh. Shahu College of Engineering, Chhatrapati Sambhajinagar, India. His areas of interest include photoluminescence, nanomaterial synthesis, thermoluminescence dosimetry, and photovoltaic efficiency enhancement.Anup P. Bhat is an Assistant Professor and Head of the Department of Electronics at Amolakchand Mahavidyalaya, Yavatmal, India. His research interests are in electronic circuit development, synthesis, biomaterials, flexible electronics, nanomagnetic materials, miniaturized instrumentation for cancer detection and other wearable electronics, luminescence, and the utilization of fly ash and materials in agriculture.