Mingrui He is a Postdoctoral Researcher at the School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Australia. He received his B.S. and M.S. degrees in Materials Science and Engineering at Chonnam National University (CNU), Korea in 2015 and 2017, and Ph.D. degree from UNSW in 2021. His research interests are kesterite and perovskite materials for photovoltaic solar cells and hydrogen fuel technologies.