Optical microcavities are resonators that have at least one dimension on the order of a single optical wavelength. These structures enable to control emission properties materials placed inside them. One their most dramatic potential features is threshold-less lasing,unlike conventional lasers. This possible due 2D monolayers, Heterostructures, Hybrid which used as active layers for polariton-e...

The Wannier exciton properties in a single quantum well (SQW) of Zn(S,Se)/ZnS strained materials are reproduced by an accurate variational envelope function. A systematic study of binding energy and oscillator strength is performed as a function of well thicknesses and strain parameter values. Optical response and second harmonic generation effects (SHG) in asymmetric single quantum wells (ASQW...

The coherent third-order nonlinear response of monolayer transition-metal dichalcogenide semiconductors, such as ${\mathrm{MoSe}}_{2}$, is dominated by the exciton response, well biexciton and trion resonances. fact that these resonances may be spectrally close together makes identification signatures, for example in differential transmission (DT), challenging. Instead focusing on explaining a ...

We have developed a framework for using temperature dependent static and dynamic photoluminescence (PL) of hybrid organic-inorganic perovskites (PVSKs) to characterize lattice defects in thin films, based on the presence of nanodomains at low temperature. Our high-stability PVSK films are fabricated using a novel continuous liquid interface propagation technique, and in the tetragonal phase (T ...

We report quantum Monte Carlo calculations of biexciton binding energies in ideal two-dimensional bilayer systems with isotropic electron and hole masses. We have also calculated exciton-exciton interaction potentials and pair-distribution functions for electrons and holes in bound biexcitons. Comparing our data with results obtained in a recent study using a model exciton-exciton potential Sch...

We examine exciton recombination, energy-, and charge transfer in multilayer CdS/ZnS quantum dots (QDs) on silver plasmonic resonators using photoluminescence (PL) and excitation spectroscopy along with kinetic modeling and simulations. The exciton dynamics including all the processes are strongly affected by the separation distance between QDs and silver resonators, excitation wavelength, and ...

Understanding the pathways of hot exciton relaxation in photoexcited semiconductor nanocrystals, also called quantum dots (QDs), is of paramount importance in multiple energy, electronics and biological applications. An important nonradiative relaxation channel originates from the nonadiabatic (NA) coupling of electronic degrees of freedom to nuclear vibrations, which in QDs depend on the confi...

We study the transport of collective excitations (Frenkel excitons) in systems with static disorder in the transition energies, not limiting ourselves to Gaussian transition energy distributions. Instead, we generalize this model to the wider class of Lévy stable distributions, characterized by heavy tails. Phonon-assisted scattering of excitons, localized by the disorder, leads to thermally ac...

Starting from the rigorous quantum-field-theory formalism, we derive a formula for screened conductivity designed to study coupling of light with elementary electron excitations and ensuing electromagnetic modes in two-dimensional (2D) semiconductors. The latter physical quantity consists three fully separable parts, namely, intraband, interband, ladder conductivities, is calculated beyond rand...