Research Highlights
The long-standing interpretations for the exceptional photovoltaic and
optoelectronic properties showcased by the perovskite family largely pertain to
the underlying complicated interplay of polaron formation and hot carrier
cooling. In some of our recent works, we have primarily focused on reaccessing the existing
status of the polaron studies conducted on CsPbBr3based systems in
particular, in the framework of the transient absorption investigations. The
role of the key aspect that is ultimately accountable for deciding the fate of
polaron formation i.e. the carrier-
Longtiudinal Optical (LO) phonon coupling has been comprehensively evaluated in
terms of the diverse factors which affect this FrÖhlich interaction mediated
coupling. Our recent works provide an elaborate discussion regarding the
alterations in the lattice polarity, surrounding dielectric medium (10.1021/acs.jpclett.9b01552), lattice temperature (10.1021/acs.jpclett.0c01724) and the system dimensionality (10.1021/acs.jpclett.0c01853) which can influence the charge screening extents and
thereby the polaron formation process.