Structure-Property Correlation in Ba/Sr-Ca-Mg-Zn-Si-Al-O Glass: Elucidation by Experimental and Molecular Dynamics Simulation Study.

Broad band transmitting glasses from visible to mid-infrared with good mechanical strength, chemical durability, glass-forming ability, and thermal stability are preferred for optics and laser technology applications. Generally, low phonon energy glasses possess an extended transmission cutoff toward mid-infrared, but at the same time, retention of other desired properties is challenging for the researchers. In this work, we have shown that mixed alkaline earth (Ba/Sr) would have the potential to improve overall glass properties while retaining its low phonon energy when CaO is partially substituted by BaO/SrO in calcium magnesium zinc silica-aluminate (CMZSA) glass.

LnTeO (Ln = La, Gd, and Eu) "Anti-Glass" Phase-Assisted Lanthanum-Tellurite Transparent Glass-Ceramics: Eu Emission and Local Site Symmetry Analysis.

The presence of lanthanide-tellurite "anti-glass" nanocrystalline phases not only affects the transparency in glass-ceramics (GCs) but also influences the emission of a dopant ion. Therefore, a methodical understanding of the crystal growth mechanism and local site symmetry of doped luminescent ions when embedded into the precipitated "anti-glass" phase is crucial, which unfolds the practical applications of GCs. Here, we examined the LnTeO "anti-glass" nanocrystalline phase growth mechanism and local site symmetry of Eu ions in transparent GCs produced from 80TeO-10TiO-(5 - )LaO-5GdO-EuO glasses, where = 0, 1, 2.

Realization of phosphor-in-glass thin film on soda-lime silicate glass with low sintering temperature for high color rendering white LEDs.

YAlO:Ce phosphor-in-glass (PiG) thin film on soda-lime silicate glass substrate has been applied using screen-printing method for generation of white LED light in modern day lighting. In this work, a glass composition in a ZnO-BiO-BO system has been optimized to have low softening temperature, as well as matching the refractive index with that of YAlO:Ce phosphor. The sintering of the PiG layers was performed at a relatively low temperature of 560°C to avoid the chemical degradation of the phosphors.

Experimental evidence for quantum cutting co-operative energy transfer process in Pr/Yb ions co-doped fluorotellurite glass: dispute over energy transfer mechanism.

Pr/Yb doped materials have been widely reported as quantum-cutting materials in recent times. However, the question of the energy transfer mechanism in the Pr/Yb pair in light of the quantum-cutting phenomenon still remains unanswered. In view of that, we explored a series of Pr/Yb co-doped low phonon fluorotellurite glass systems to estimate the probability of different energy transfer mechanisms.

Role of Yb(3+) ions on enhanced ~2.9 μm emission from Ho(3+) ions in low phonon oxide glass system.

The foremost limitation of an oxide based crystal or glass host to demonstrate mid- infrared emissions is its high phonon energy. It is very difficult to obtain radiative mid-infrared emissions from these hosts which normally relax non-radiatively between closely spaced energy levels of dopant rare earth ions. In this study, an intense mid-infrared emission around 2.

Time resolved fluorescence and energy transfer analysis of Nd(3+)-Yb (3+)-Er (3+) triply-doped Ba-Al-metaphosphate glasses for an eye safe emission (1.54 microm).

This paper reports on the preparation and systematic analysis of energy transfer mechanisms in Nd(3+)-Yb(3+)-Er(3+) co-doped new series of barium-alumino-metaphosphate glasses. The time resolved fluorescence of Nd(3+) in triply doped Ba-Al-metaphosphate glasses have revealed that, Yb(3+) ions could function as quite efficient bridge for an energy transfer between Nd(3+) and Er(3+) ions. As a result, a fourfold emission enhancement at 1.