Dr. Ritesh L. Kohale is an Assistant Professor and Head of the Department of Physics, SGM College, Nagpur, India. His research focuses on the synthesis and characterization of pyrophosphate-based phosphors for solid-state lighting, and on nanostructured materials for display technologies. He has published more than 40 research papers in international and national reviewed journals and also he has edited book in Nova Science Publisher. He is an editorial board member of American Journal of Optics and Photonics.Vijay B. Pawade is an Assistant Professor in the Department of Applied Physics at the Laxminarayan Innovation Technological University, Nagpur, India. His research focuses on rare earth-doped oxide materials and their applications in LEDs, solar cell devices, and photocatalytic processes.Sanjay J. Dhoble is a Professor in the Department of Physics at R.T.M. Nagpur University, India. During his research career, he has worked on the synthesis and characterization of solid-state lighting materials, as well as the development of radiation dosimetry phosphors using thermoluminescence techniques and utilization of fly ash.Dr. Abdul Hakeem Deshmukh is an Assistant Professor at the Institute of Physics, Polish Academy of Sciences, Warsaw, Poland. His research focuses on synthesis and characterization of inorganic luminescent materials for white light emitting diode applications, and the chemical development of novel nano/micro-sized inorganic luminescent materials.