Prof. Hyoyoung Lee has completed his PhD at Department of Chemistry, University of Mississippi, USA in 1997. He did his postdoctoral studies at North Carolina State University. He worked at Electronics and Telecommunications Research Institute and then moved to Dept. of chemistry, Sungkyunkwan University as a full professor. He served as a director of National Creative Research Initiatives. Currently, he has served as an associate director of Centre for Integrated Nanostructure Physics, Institute of Basic Science. His current research area is 0-2D semiconducting materials including grapheme oxides, grapheme quantum dots, transition metal dichalcogens and phase-selectively reduced metal oxides including blue/black TiO2, and their applications for energy conversion, catalysis and energy storage. He has written more than 150 journal articles in top-tier journals and has been serving as an editorial board member of scientific reports.