Controlling Spin-Orbit Interactions in Hybrid Metal-Halide Perovskites with Magnetic Doping and Chirality

Materials combining the optoelectronic functionalities of semiconductors with control of the spin degree of freedom are highly sought after for the advancement of quantum technology devices and provide exciting avenues for polarized light-emission.<br/>In my talk, I will present our efforts on gaining control over spin dynamics and spin-orbit interactions through compositional and structural tuning in solution-processable hybrid perovskite semiconductors. In a first direction, we aim to exploit the exceptional optoelectronic properties of these hybrid perovskites, together with their tolerance in the electronic states to dopants and defects, to make advances towards high-performance dilute magnetic semiconductors. I will discuss how we can employ ultrafast optical spectroscopy for insights into exciton population dynamics and ultrafast optical control of spin dynamics in novel hybrid perovskite materials incorporating transition-metal dopants. In a second direction, we aim to design spin-orbit interactions by tailoring the chiral crystal symmetry of hybrid metal-halide perovskites. I will present our results on chiral lead-free low-dimensional bismuth-based materials, as well as recent advances in maximizing luminescence and polarization in lead-halide systems.