Dr. Kazi Sajedur Rahman is a Research Fellow/Senior Lecturer at the Solar Energy Research Institute (SERI) of Universiti Kebangsaan Malaysia (@The National University of Malaysia). Previously, he worked as a Postdoctoral Researcher at the Institute of Sustainable Energy of Universiti Tenaga Nasional (@The Energy University) of Malaysia for almost 2 years. He achieved a Doctor of Philosophy (Ph.D.) from the Department of Electrical, Electronic & Systems Engineering of Universiti Kebangsaan Malaysia (@The National University of Malaysia) in 2018. He obtained a Master of Science (MSc) from the Solar Energy Research Institute (SERI) of Universiti Kebangsaan Malaysia (@The National University of Malaysia) in 2014. He completed his Bachelor of Science (BSc) in 2011 in Electrical and Electronic Engineering (EEE) from Chittagong University of Engineering and Technology (CUET), Bangladesh. He has been working on thin film solar cell science and technology since 2012. His primary research focus is on exploring low-cost and high-efficiency CdTe thin film solar cells. Dr. Rahman has authored several peer-reviewed articles and a few book chapters related to the thin film solar cells. His research interests include thin film solar cells (CdTe, CZTS, CIGS), semiconductor physics and devices, solar photovoltaic applications, etc.