DOI: https://doi.org/10.29363/nanoge.inform.2019.015
Publication date: 8th January 2019
Following a surge of interest in lead halide perovskites, research on colloidal nanocrystals of these materials has gathered momentum in the last years. In such a narrow time span, several properties/features of halide perovskite nanocrystals have been investigated, among them electroluminescence, lasing, anion-exchange, as well as control of size and shape such that nanocrystals in the quantum confinement regime can now be easily fabricated, with narrow size distributions. One aspect that remains relatively less explored is the surface chemistry of these nanocrystals. Ligand binding in this case is very dynamic and can be strongly influenced by the external environment. The present talk will highlight the research activities of our group on understanding surface ligand binding and how this influences the synthesis, stability, optical properties, and post-synthesis transformations of colloidal lead halide perovskite nanocrystals. The various techniques that are used to investigate the surface of nanocrystals will also be critically discussed.
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