Abstract: This presentation will discuss the synthetic strategy and photophysical properties of strongly quantum-confined cesium lead halide perovskites quantum dots and magnetic doping in these materials. Despite the explosive interest in various lead halide perovskite nanocrystals in recent years, the properties of the confined exciton and its interaction with other degrees of freedom and magnetic dopant are relatively unexplored territory because of the challenge in controlling the quantum confinement and doping.

I will first discuss the recent development of a strategy to control quantum confinement through thermodynamic equilibrium that can produce quantum dots with near-perfect ensemble homogeneity and methods of doping paramagnetic transition metal ions in the perovskite nanocrystals. Next, the unique properties of strongly confined perovskite quantum dots that are distinct from those of other quantum dots, such as light-induced activation of forbidden transition, and other photophysical properties resulting from the strong coupling of exciton and magnetic dopant will be discussed.