ABSTRACT: 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.
BIOGRAPHY: Dr Pradhan did his
PhD from IIT Kharagpur, India and post docs in Ben Gurion University, Israel
and University of Arkansas, USA. He joined at Indian Association for the
Cultivation of Science in 2007 and continuing there as a Professor. His
research works are focused on the chemistry of semiconductor nanocrystals.