Advanced Photon Source

An Office of Science National User Facility

NST Colloquium: Synthesis and Photophysical Properties of Strongly Confined Cesium Lead Halide Perovskite Quantum Dots

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Dong Hee Son, Texas A&M University
Start Date
Start Time
11:00 a.m.

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


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