Y2O3/Y2O2S:Eu3+ nanocomposites were successfully prepared by reducing Y2O3:Eu3+ nanocrystals. The obtained Y2O3/Y2O2S:Eu3+ nanocomposites not only can emit enhanced red luminescence excited at 338 nm, but also can be used to improve the efficiency of the dye sensitized solar cells, resulting an efficiency of 8.38%, which is a noticeable enhancement of 12% compared to the cell without Y2O3/Y2O2S...

We report the first measurements, to our knowledge, of the modification of spontaneous emission rates of Eu3+ ions in the visible region owing to an absorbing medium. Precise levels of the absorption coefficient are introduced by codoping with different amounts of Nd3+. We use a binary glass system PbO-B2O3 as the host, the compositional variation of which leads to a change in the real part of ...

Rare-earth phosphors are commonly used in display panels, security printing, and fluorescent lamps, and have potential applications in lasers and bioimaging. In the present study, Eu3+- and Dy3+-codoped uniform-shaped Y2O3 submicron particles were prepared using the urea homogeneous precipitation method. The structure and morphology of the resulting particles were characterized by X-ray diffrac...

Spectroscopic characteristics of Pr3+ and Eu3+ in K2Na2GdF7, K5Li2GdF10 and K3GdF6 fluoride matrices are considered. Crystal structures of these compounds have been ascertained based on X-ray measurement on single crystal samples. Energies of lattice vibrations have been derived from IR and Raman spectra. Spectroscopic features of crystals in the VUV region were studied using experimental facil...

We describe a time-resolved fluoroimmunoassay for the cardiac glycoside digoxin. The assay depends on the competitive distribution of Eu3+-labeled anti-digoxin antibodies between solid-phase-bound digoxin and the digoxin in the sample or standard. After this immunoreaction, the bound fraction of the Eu3+-label is dissociated from the solid phase, converted into a highly fluorescent beta-diketon...

We report on the 3D precipitation, using a direct laser writing approach, of highly fluorescent silver clusters in Eu3+-doped silver-containing zinc phosphate glass. Micro-spectroscopy fluorescence emission shows ability to continuously adjust local tri-chromatic coordinates CIE (Commission Internationale de l’Éclairage) chromaticity diagram between red and white colors, thanks laser-deposited ...

The novel red-emitting BaBi2-xEuxB4O10 (x = 0.05, 0.1, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6) phosphors were obtained by a crystallization from glass. Distribution of the Eu3+ ions over cation sites refined for x 0.3 and 0.4 single-crystal X-ray diffraction data. Emission excitation spectra Eu3+-doped BaBi2B4O10 investigated first time, where it was shown that characteristic lines are attributed to int...

Gun Shot residues (GSR) are important physical evidence because of their potential, wide distribution and difficulty in destruction. To overcome the disadvantages traditional detection methods, such as time-consuming, relying on large instruments weak intuition, Ga/Eu3+/DPA rare earth complex probes were synthesized for quantitative Cu2+ shooting by hydrothermal method. The morphological size, ...

In this study, terbium and europium rare-earth ions were single-doped co-doped to synthesized SoMoO4 phosphor at room temperature. The samples prepared crystalline SrMoO4 powder by the co-precipitation. Samples had a tetragonal structure in XRD analysis d(112) spacing was changed doping. As amount of rare earth added increased, secondary phase appeared, changed. SrMoO4:Tb3+ phosphors showed gre...

Eu3+-activated tellurite glasses with a composition of xEu2O3–(10-x)SrO–5Al2O3–85TeO2 (x = 0.1, 0.5, 1.0, 5.0) were prepared an aim to detect high energy radiation, and their photoluminescence (PL) scintillation characteristics investigated for scintillator applications. Some luminescence peaks attributable the 4f-4f transitions Eu3+ appeared at approximately 578, 592, 613, 652 700 nm under vis...