Speaker
P K DATTA, Dept. of Physics, IIT Kharagpur-721302 INDIA
Abstract
Following the discovery of graphene, two-dimensional (2D) materials have captured the spotlight in the research community for optoelectronic application due to the structural versatility and electronic properties affecting their physical and chemical properties. Researches on the basic ultrafast phenomena of 2D materials are the main pillar behind the success of optoelectronic devices. In the pursuit of understanding various ultrafast dynamical behaviors, the realm of excitation of semiconductor to non-equilibrium state and its subsequent relaxation to the ground state has to be carefully explored. Ultrafast broadband transient absorption (TA) spectroscopy is the perfect spectroscopic tool to extract comprehensive knowledge about excited carrier dynamics including but not limited to exciton formation, exciton-exciton annihilation, hot carrier cooling, and recombination dynamics information of 2D material. The present talk will overview the recent results of my group on various 2D materials.
