Publication date: 2nd November 2020
Lead halide perovskite nanocrystals are recently emerged as one of the most efficient energy materials for photovoltaic and optoelectronic applications. These nanocrystals typically retained the cube or platelet shapes having six facets. These could tune colors with tuning halide compositions and also enhance the emission intensity. Extensive research has been carried out to understand the chemistry and physics of these nanocrystals to optimize their phase stability and optical properties. However, entire developments on these nanocrystals till date are related to their six facets, ligands on these surfaces and ions interactions mostly halide exchange for changing their optical bands; but stories behind other facets were still largely unknown. This talk would present the chemistry and physics of some of the new facets in perovskite nanocrystals and would discuss their success stories, challenges in designing and variations in optical properties.