Prof CHI’s current research interests were focused on the photophysical and opto-electrical properties of organic and organometallic materials, design of transition-metal phosphors for organic light emitting diodes (OLEDs) and evaluation of sensitizers and hole transporting materials for dye sensitized solar cells (DSSC) and Perovskite solar cells (PSC). He has coauthored over 340 scientific articles with overall H-index > 60 and held over 50 patents in regions such as China, Canada, Taiwan and the United States.