It is well known that the optical response of a medium depends on the local field acting on
an individual emitter rather than on the macroscopic average field in the medium. The local …

The determination of the appropriate local‐field factor for quantifying the response of a
molecule to an external electric field is of major importance in optical spectroscopy. Although …

Nanocrystals (NCs) doped with luminescent ions form an emerging class of materials. In
contrast to excitonic transitions in semiconductor NCs, the optical transitions are localized …

This contribution is a review of the luminescence and scintillation properties of nanoparticles
(NP), particularly doped insulators. Luminescence spectroscopy is an appropriate tool to …

With their dipole‐forbidden 4f transitions, lanthanides doped in nanoparticles promise high
excited state lifetimes and quantum yields that are required for applications such as …

The radiative lifetime of excited states is governed by Fermi's Golden Rule. For many
applications, the radiative decay rate is an important parameter. For example, for scintillators …

Cubic Gd2O3: Eu3+ (0.30, 1.01, 2.78, and 4.60 mol%) nanorods with an average diameter
of ca. 14 nm were synthesized at ambient pressure and mild temperature (70° C), using a …

CdSe (core)/CdS (shell) nanorods (NRs) have been extensively investigated for their unique
optical properties, such as high photoluminescence (PL) quantum efficiency (QE) and …

The effect of macroscopic parameters of a substance on the optical characteristics of
impurity particles is investigated. A generalized control equation is derived for two-level …

An analytical expression is obtained for the radiative-decay rate of an excited optical center
in an ellipsoidal dielectric nanoparticle (with sizes much less than the wavelength) …