Multicarrier dynamics play an essential role in quantum dot photophysics and
photochemistry, and they are primarily governed by nonradiative Auger processes. Auger …

The relaxation of the above-gap (“hot”) carriers in lead halide perovskites (LHPs) is
important for applications in photovoltaics and offers insights into carrier–carrier and carrier …

Harnessing quantum confinement (QC) effects in semiconductors to retard hot carrier
cooling (HCC) is an attractive approach for enabling efficient hot carrier extraction to …

Sub-10 fs resolution pump–probe experiments on methylammonium lead halide perovskite
films are described. Initial response to photoexcitation is assigned to localized hot excitons …

Carrier cooling is of widespread interest in the field of semiconductor science. It is linked to
carrier–carrier and carrier–phonon coupling and has profound implications for the …

Colloidal PbS nanoplatelets (NPLs) are highly interesting materials for near-infrared
optoelectronic applications. We use ultrafast transient optical absorption spectroscopy to …

Transient absorption measurements were conducted on pristine and monoexciton saturated
CsPbBr3 nanocrystals varying in size within the regime of a strong quantum confinement …

The idea of phonon bottlenecks has long been pursued in nanoscale materials for their
application in hot exciton devices, such as photovoltaics. Decades ago, it was shown that …

Charge carrier dynamics of multinary quantum dots like CuInS2 (CIS) nanocrystals (NCs) is
not clearly understood, especially in ultrafast time scales. Herein we have synthesized …

The spectator exciton method follows stepwise changes in a nanocrystal's absorption with
the accumulated number of excitons. It involves comparison of pump–probe spectra in …