Dr. Jai Singh is an Associate Professor at Guru Ghasidas Vishwavidyalaya's Department of Pure and Applied Science (Central University). He received his doctorate in the subject of II-VI oxide nanomaterials from Banaras Hindu University in Varanasi, India. Soon after completing his Ph.D., he joined Cologne University in Cologne, Germany, to do post-doctoral research in the areas of 2D materials, Transparent Conducting Oxide (TCO) materials, and Energy materials, and then moved to Pusan National University in Busan, South Korea, and Sejong University in Seoul, South Korea, to do the same. He has received several prestigious national and international awards, including the GATE Fellowship from the Ministry of Human Resource Development, the CSIR-Junior Research Fellowship and Senior Research Fellowship from the Council of Scientific and Industrial Research, the Postdoctoral Fellowship from Busan National University, the NSC Postdoctoral Fellowship from Taiwan, and the Visiting Fellowship from Cologne University in Germany. Dr. Khalid Bin Masood is an Assistant Professor at the Govt. Degree College, Shopian affiliated with University of Kashmir. He has co-authored a number of book chapters and articles on thermoelectric materials. Dr Ajaya Kumar received his Ph.D. degree on Kinetics and oxidation from University of Allahabad Uttar Pradesh, India. His research focuses on multiple areas such as developing strategies, based on synthesis, characterization, properties modification, design, fabrication, characterization of nanostructures, quantum dots, perovskite materials and photocatalyst for waste water treatment, and advanced oxidation processes. He has received various awards a Certificate of Merit in 2016 from American Chemical Society (USA) and is also the member of various societies. Professor Chen is a distinguished Professor in Energy Materials at the University of Southern Queensland (USQ), Australia. His expertise is in functional materials for thermoelectrics and nanoelectronics, and advanced microscopy. Currently, Dr Chen is leading 2 ARC discovery projects, 1 sub project at ARC Research Hub, and 3 industry investments. Dr Chen is a Clarivate Highly Cited Researcher (Top 0.1% researcher in the world).