Tracking charge, spin and light polarization in space & time in emerging semiconductors - Prof. Sascha Feldmann's Inaugural Lecture

The Laboratory for Energy Materials combines ultrafast magneto-chiroptical spectroscopy and materials chemistry to transform the way we produce and consume energy as a society. For this, we explore the concept of symmetry breaking in novel soft semiconductors and nanomaterials to control charge, spin and light polarization within these printable materials. We work on uncovering the design rules to enable the next generation of cheap, efficient and flexible solar cells & ultra-bright displays, and unlock entirely new applications in quantum information technology.
In this lecture, I will give an overview of our recent efforts to understand the spin-optoelectronic performance of such “messy” semiconductors, in particular halide perovskites. I will demonstrate that the disorder present in these materials can lead to surprising consequences for the way in which charges flow, spins may accumulate, or light becomes polarized. I will also show-case the spectro-microscopy tools we continue to develop for the community to track such dynamics with unprecedented resolution and sensitivity in space & time, paving the way for a sustainable energy future.

Complimentary participation; registration required: