Full-color dynamic volumetric displays with tunable upconversion emission from RE-doped glasses (RE = Ho, Tm, Nd, Yb) under NIR laser excitation.

Three-dimensional (3D) imaging technology holds immense potential across various high-tech applications; however, current display technologies are hindered by limitations such as restricted viewing angles, cumbersome headgear, and limited multi-user accessibility. To address these challenges, researchers are actively exploring new materials and techniques for 3D imaging. Laser-based volumetric displays (VDs) offer a promising solution; nonetheless, existing screen materials fall short in meeting key requirements for long-term durability, full-color operation, and scalability.

An Investigation of the Photonic Application of TeO-KTeO-NbO-BaF Glass Co-Doped with ErO/HoO and ErO/YbO at 1.54 μm Based on Its Thermal and Luminescence Properties.

A glass composition using TeO-KTeO-NbO-BaF co-doped with ErO/HoO and ErO/YbO was successfully fabricated. Its thermal stability and physical parameters were studied, and luminescence spectroscopy of the fabricated glasses was conducted. The optical band gap, , decreased from 2.

Investigation of Thermal and Spectroscopic Properties of Tellurite-Based Glasses Doped with Rare-Earth Oxides for Infrared Solid-State Lasers.

The thermal and optical properties of 60TeO-20KTeO-10WO-10NbO (in mol%) glasses doped with HoO, ErO, and TmO were explored in the present work. The thermal stability, refractive index n, extinction coefficient k, absorption coefficient α, and optical band gap of the glasses were evaluated. The UV-Vis-NIR absorption spectra, the Judd-Ofelt intensity parameter, the spectroscopic quality factor, and the emission and absorption cross-sections were calculated to investigate the effects of Er and Tm, respectively, on the band spectroscopic properties of Ho ions.

Optimizing optical thermometry with tri-doped BaGdVO phosphors: Ratiometric and fluorescence lifetime analysis.

Optical sensor technology has undergone a transformative evolution with the advent of fluorescence ratio techniques (FIR) and fluorescence lifetime (FL) strategies, revolutionizing precision, performance, and reliability. This study delves into the synthesis of BaGdVO phosphors doped with Ho/Nd, Er, and Yb, employing the sol-gel method for upconverting material fabrication. A thorough investigation into the structural, morphological, and optical properties of the synthesized phosphors is conducted.

Advanced temperature sensing with Er/Yb co-doped BaGdVO phosphors through upconversion luminescence.

Optical thermometry is a non-contact temperature sensing technique with widespread applications. It offers precise measurements without physical contact, making it ideal for situations where contact-based methods are impractical. However, improving the accuracy of optical thermometry remains an ongoing challenge.

Glass-based LED system for indoor horticulture: enhanced plant growth through Sm and Tm co-doped luminescent glasses.

This study addresses the challenges of sustainable and efficient agricultural practices in the face of climate change and the destruction of agricultural lands by presenting the development of a novel plant growth LED based on Sm and Tm co-doped luminescent glasses with color-converting properties that emit blue and red light, resulting in an increased rate of photosynthesis and density of photosynthetically active radiation reaching the harvesting pigments. The developed LED exhibits photoluminescence (PL) peak positions ranging from 454 to 648 nm, with a spectral coverage of 50% and 39% of the absorption regions of chlorophyll a and chlorophyll b, respectively, resulting in an impressive 56% photoluminescence quantum yield (PLQY). Furthermore, the developed plant growth LED demonstrates robust performance, remaining unaffected by temperature cycles and extended operation periods.

The coupling of blue emitting carbon dots with Eu/Tb co-doped luminescent glasses for utilization in white light emitting diodes.

Lanthanide-doped luminescent glasses have attracted tremendous attention in modern optoelectronic applications, especially for solid-state white light-emitting diodes (WLEDs). Eu/Tb co-doped luminescent glasses are well-known to emit intense yellowish-orange light resulting from the energy transfer from green-emitting sensitizer Tb ions to red-emitting activator Eu ions. Obtaining highly efficient blue light from lanthanide ions remains a challenge due to their weak down-converted emission.

Color tunable emission from Eu and Tm co-doped CsPbBr quantum dot glass nanocomposites.

Cesium lead bromide (CsPbBr) quantum dots (QDs) have shown great potential in the field of luminescent materials owing to their superior optical and electrical properties. However, instability and lack of multicolor emissions resulting from the intrinsic nature of CsPbBr QDs are still the major challenge for their commercialization. Herein, Eu and Tm co-doped CsPbBr QD glass nanocomposites (GNCs) are successfully synthesized traditional melt-quenching followed by a heat-treatment route to obtain tunable emission in a durable host material.

Recent progress in lanthanide-doped luminescent glasses for solid-state lighting applications-a review.

Nowadays, solid-state white light-emitting diodes (wLEDs) have attracted remarkable attention for applications in general lighting, displays and numerous electronical devices due to their eminent efficiency, longer lifetime and higher mechanical durability compared to traditional incandescent and fluorescent lights. In current commercial wLEDs, a combination of YAlO:Ceyellow phosphor with blue LED chip and epoxy resin is generally used to generate white light. However, there are some considerable frailties mostly originated from phosphor and resin such as, degradation upon heat, and moisture, inhomogeneous spectral distribution, and poor color rendering capability.

Novel HMO-Glasses with SbO and TeO for Nuclear Radiation Shielding Purposes: A Comparative Analysis with Traditional and Novel Shields.

The radiation shielding characteristics of samples from two TeO and SbO-based basic glass groups were investigated in this research. TeO and SbO-based glasses were determined in the research as six samples with a composition of 10WO-(x)MoO-(90 - x)(TeO/SbO) (x = 10, 20, 30). A general purpose MCNPX Monte Carlo code and Phy-X/PSD platform were used to estimate the radiation shielding characteristics.

The synergistic effect of Er and Ho on temporal color tuning of upconversion emission in a glass host a facile excitation modulation technique for anti-counterfeiting applications.

Lanthanide-doped upconversion luminescent materials are highly promising for diverse applications, e.g., solid-state lighting, volumetric displays, and anti-counterfeiting, owing to their unique optical feature of color-tunable emission under near-infrared excitation.