Dr. Himadri Sekhar Das is presently working as Assistant Professor in Haldia Institute of Technology. He got his Ph. D degree from IIEST, Shibpur in 2021, M. Tech from Haldia Institute of Technology (WBUT), West Bengal in 2010. He has more than 8 years’ research and 5 years teaching experience. His research area was Doped ZnO based thin Film for different optoelectronics applications. He has published more than 40 research articles and 20 book chapters, 2 books. He is also DST Fellow and life member and Fellow of Indian Chemical Society (FICS) and Indian Photobiology society (IPS) also the Honorary Associate Member of Royal Society of Chemistry-UK.