Germanium oxide (GeO2) and tellurium oxide (TeO2) based glasses are classed as the
heavy metal oxide glasses, with phonon energies ranging between 740cm− 1 and 880cm …

There are three ways in which the cell efficiency of silicon solar cells may be improved by
better exploitation of the solar spectrum: down-conversion (cutting one high energy photon …

Quantum cutting downconversion (DC) involving the emission of two near-infrared (NIR)
photons for each ultraviolet (UV) photon absorbed is realized in the Ce 3+/Yb 3+ codoped …

Although the concept of transparent, polycrystalline ceramics is now 40 years old, only
recently has control of processing parameters been sufficient to produce photonic quality …

Yb3+-doped oxyfluoride glass ceramics were fabricated by melt-quenching and subsequent
heating. X-ray diffraction and high-resolution transmission electron microscopy analyses …

Lanthanide (Ln3+)-doped upconversion nanoparticles (UCNPs) have attracted tremendous
interest owing to their potential bioapplications. However, the intrinsic photophysics …

A tutorial introduction to the spectra of lanthanide ions is given. The chapter begins with a
brief comparison of luminescence of lanthanide ions (Ln 3+) in the solid, liquid, and gas …

Sunlight is one of the Earth's clean and sustainable natural energy resources, and extensive
studies are conducted on the conversion of solar energy into electricity using photovoltaic …

A study of the optical properties of Nd 3+ ion in TeO 2–PbF 2–AlF 3 glasses has been
carried out for different Nd 3+ concentrations. Based on the Judd–Ofelt theory, intensity …

A transparent Tb 3+ and Yb 3+ codoped oxyfluoride glass ceramic containing Ca F 2
nanocrystals was developed. This glass ceramic showed an intense ultraviolet emission at …