Into the Darkness: The Hunt for Forbidden Excitons

Over the past decade, scientists have seen hints of the behind-the-scenes existence of the forbidden dark excitons, through their effects on their optically active cousins. Recently at OIST, after a many-years-long effort in the development of novel experimental instrumentation, the dark exciton was directly imaged, revealing the surprising dominance of these invisible particles after photoexcitation. This first visualization has the potential to revolutionize opto-electronic technology in two-dimensional semiconductors from quantum computing to LEDs. This webinar allows you to hear directly from Dr. Keshav Dani, Associate Professor at OIST and head of the Femtosecond Spectroscopy Unit, to learn about his recent groundbreaking research on the dark exciton, which was just published in the December 4, 2020 issue of Science, one of the leading scientific journals that is produced by the American Association for the Advancement of Science.

Presenter: Dr. Keshav Dani, Assistant Professor, OIST
Prof. Dani joined OIST as an Asst. Professor in Nov. 2011 after completing a Director’s Postdoctoral Fellowship at the Center for Integrated Nanotechnologies at Los Alamos National Laboratory. Dr. Dani graduated from UC Berkeley in 2006 with a PhD in Physics under the supervision of Prof. Daniel Chemla. He obtained a BS from Caltech in Mathematics with a senior thesis in Quantum Information Theory under John Preskill and Hideo Mabuchi. His recent research interests have been in studying the nonlinear and ultrafast properties of 2D and energy materials using time-resolved photoemission spectroscopy.

Read more about Prof. Dani here: https://groups.oist.jp/fsu/keshav-m-dani

Read More about Dark Excitons here: https://www.oist.jp/news-center/press...