Photophysical Properties of Low-Dimensional Colloidal Nanostructures

This presentation will discuss several photophysical and spectroscopic properties of zero- and two-dimensional colloidal nanostructure focusing on two groups of materials: (1) perovskite quantum dots and Mn-doped perovskite quantum dots and (2) quantum dots of monolayer transition metal dichalcogenides. First half of the presentation will focus on recent development on the synthesis of cesium lead halide perovskite quantum dots with high level of control on their quantum confinement and ensemble uniformity as well as their photophysical properties. New photophysical properties resulting from the isoelectronic doping of paramagnetic Mn2+ ions in these QDs will also discussed. The second part of the presentation will discuss the solution-phase chemical synthesis and photophysical properties of quantum dots derived from single and multi-layered 2D transition metal dichalcogenides. The nature of the optical transition and photoluminescence in single-layer QD as well as the strong interaction with surrounding solvent environment will be discussed. 

20180614_특별세미나_prof. Dong Hee Son.pdf