Bin Chen is a postdoctoral fellow in Sargent lab at the University of Toronto. Bin received his Ph.D. degree in materials science and engineering from Arizona State University in 2018, under the supervision of Prof. Sefaattin Tongay. His previous research was on understanding defects in 2D materials. He joined Sargent group after Ph.D. and his current focus is on defect passivation and stability enhancement of interfaces in perovskite solar cells.