Dr. Manjeet Singh completed his Ph.D. in Chemistry from IIT-BHU, India in the area of nanoparticles synthesis and characterization. He has worked in the area of optoelectronic devices for the last 12 years. He has also worked on the fabrication of solution-processed perovskite, CIGS and CZTS and solar cells at Osaka University, Japan and Incheon National University, South Korea. His research group is also working on the silver nanowire-based flexible optoelectronic devices. Dr. Ashish Kumar Singh has a Ph.D. from IIT-BHU, India and post doc from University of South Africa, Johannesburg, South Africa. He is an Assistant Professor, Department of Chemistry, Hansraj College, University of Delhi, India, and is currently working in the area of preparation and application of advanced materials for corrosion inhibitors. He is among the highly cited top 2% scientist according to the list published by Stanford University every year. Dr. Balram Pani is a Professor at Bhaskaracharya College of Applied Sciences, University of Delhi, India. He obtained his Ph.D. from Jawaharlal Nehru University. Dr. Pani has 20 years of research and teaching experience in the field of chemistry and Environmental Science.