Up-Conversion Emissions from HfO: Er, Yb Nanoparticles Synthesized by the Hydrothermal Method.

Up-conversion emission from HfO nanoparticles, as a host lattice, doped with Er and Yb ions and codoped with alkaline cations Li and Na obtained. The HfO nanoparticles, about 80 nm in diameter, were synthesized by the hydrothermal method at 200 °C for 1.3 h, and an additional heat treatment at 1000 °C was necessary to ensure the dopants incorporation into the host lattice.

Tunable Mie resonance in complex-shaped gadolinium niobate.

Nanoscale particles described by Mie resonance in the UV-vis-NIR region are in high demand for optical applications. Controlling the shape and size of these particles is essential, as it results in the ability to control the wavelength of the Mie resonance peak. In this work, we study the extensive scattering properties of gadolinium niobate particles with complex bar- and cube-like shapes in the UV-vis-NIR region.

Synthesis and characterization of poly(methyl methacrylate) co-doped with Tb(tmhd) - Rhodamine B for luminescent optical fiber applications.

Currently, there is a growing interest in the development of multi-colored materials based on the combination of two or more systems (organic or inorganic) as a strategy to take advantage of their combined physical or chemical properties. These multi-colored materials have found potential applications as sensors, amplifiers, and optical fibers. In this work, the physical characteristics of poly(methyl methacrylate) (PMMA) doped with Terbium(III)-tris-(2,2,6,6-tetramethyl-3,5-heptanedionate) (Tb(tmhd)) at 1.

Luminescent behavior of Eu doped BaHfO perovskite ceramic under UV radiation.

In this paper, luminescent properties of Europium trivalent ion in the matrix with unbalanced charge of barium hafnate under UV radiation, with special emphasis on the D → F transition are reported. The synthesis was conducted by the hydrothermal route at 200 °C with a reaction time of 90 min using chlorides as raw materials. In order to determinate the luminescent quenching concentration, the samples were doped with different amounts of Europium trivalent ions being the sample doped with 1 and 3% at of Eu which shows the highest luminescent emission.

Luminescence properties of Yb-doped SrTiO: the significance of the oxygen-titanium charge transfer state on photon downshifting.

Ceramic powders of Sr1-1.5xYbxTiO3 (x = 0.0, 0.