Tsafrir joined the NEO Lab in April 2016 as M.Sc. student. He received his B.Sc. degree in Physics and Chemistry from The Hebrew University of Jerusalem in 2015. In the last year of his B.Sc. studies he worked as a research assistant at Prof. Uri Banin's lab, investigating the physical properties of nano-crystals. At the NEO Lab Tsafrir studies 2D semiconductors optics.