Over the past two decades, there have been sizable efforts to realize condensed phase
optical cooling. To date, however, there have been no verifiable demonstrations of …

During the past two decades, great effort has been dedicated to two-photon excited colloidal
quantum dots (QDs) because of their unique optical properties and significant applications …

Phonon-assisted up-conversion photoluminescence can boost energy of an emission
photon to be higher than that of the excitation photon by absorbing vibration energy (or …

Hydrophobic lead sulfide quantum dots (PbS/OA) synthesized in the presence of oleic acid
were transferred from nonpolar organic solvents to polar solvents such as alcohols and …

The excitation-emission matrix (EEM) of colloidal quantum dots implicitly contains
information about the inhomogeneous broadening and the homogeneous linewidths of the …

We explore the status of state-of-the-art upconverter materials in the context of improving
solar cell performance. We focus on semiconductor upconversion nanostructures that can …

This study employs a combination of spectroscopic techniques, including absorption,
photoluminescence (PL), time-resolved PL kinetics, and transient absorption measurements …

We demonstrate that under optimized experimental conditions phonon-assisted anti-Stokes
photoluminescence becomes the dominant light emission process in a free-standing GaN …

In this review, we discuss the feasibility of laser cooling of semiconductor nanocrystal
quantum dots by phonon‐assisted anti‐Stokes photoluminescence. Taking into account …

Under the two-photon excitation, upconversion luminescent “INHIBIT” and “OR” logic gates
of water-dispersed CdTe quantum dots (QDs) were constituted by conjugating the QDs with …