Jayakanth Ravichandran - Dimensional Control of Light-Matter Interaction in Perovskite Chalcogenides
From Kathryn Gentilello on April 2nd, 2019
Perovskite Chalcogenides are a new class of semiconductors which have tunable band gap in the visible to infrared part of the electromagnetic spectrum. Besides this band gap tunability, they offer a unique opportunity to realize large density of states semiconductors with high carrier mobility. In this talk, I will discuss some of the experimental advances made both in my research group and in the research community on the theory, synthesis of these materials and understanding their optoelectronic properties. Perovskite chalcogenides have a large structural and chemical phase, which allows us finer knobs to tailor light-matter interaction precisely over a broad energy range spanning the visible to infrared spectrum. I will show that controlling dimensionality of these materials has profound influence on the light-matter interaction, which results in novel properties such as highly anisotropic absorption and refraction, unconventional band gap evolution. Finally, I will provide a general outlook for future studies on these exciting new class of materials.