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.