Event Details

Professor Renee Sher, Wesleyan University is presenting.

Organic-inorganic hybrid perovskite solar cells have set efficiency records at least once a year in the past decade. This material offers numerous possibilities and  presents several mysteries. Among them, the optical properties are widely tunable by mixing halide compositions, but at the same time halide segregation under illumination reversibly changes the material. In my group, we use terahertz  spectroscopy as a non-contact conductivity probe with excellent time resolution  as a tool for studying advanced solar cell materials. This talk will focus on how we  use election’s local motion to understand why the inclusion of inorganic cations helps achieve high efficiencies in solar cells and to probe the local environment in  wide-bandgap mixed-halide perovskites.

Refreshments at 3 PM.