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Optica Applicata
2010 Vol. 40, nr 2 311--321
EN The research examines the interaction of dye molecules with their dimers (H aggregates) and the more complex formations (J aggregates) developing in porous glass. The use of porous glass when dealing with dye aggregation has resulted in obtaining photoluminescence dimers of the J aggregating dye, t[...]
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Materials Science Poland
2004 Vol. 22, No. 2 145--152
EN Emission spectra of Al2(WO4)3 doped with Eu3+ were recorded at room temperature (orthorhombic phase) and at 10 K (monoclinic phase). The luminescence excitation spectra and luminescence decay profiles were recorded for both structural modifications at RT and LN2T, and the luminescence lifetimes of E[...]
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Physicochemical Problems of Mineral Processing
EN The aim of this research was to prepare rare metal (Er, Yb)-modified TiO2 nanoparticles by a sol-gel method. The obtained nanoparticles were characterized by BET measurements, UV-Vis spectra and the Laser-induced fluorescence (LIF) method. Visible light photocatalytic activity of the sample was stud[...]
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Optica Applicata
EN Nano- and microparticles of cerium dioxide having a cubic lattice with space group Fm3m, whose Ce4+ ions are partially substituted for Tb4+ and Tb3+ ions, are formed in the siliceous films and powders obtained with the help of the sol-gel technique. It is shown that saturation of the media with hydr[...]
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Optica Applicata
EN Oxyfluoride lead borate glasses singly doped with Nd3+ and Er3+ ions have been studied before and after thermal treatment. The orthorhombic PbF2 crystallites are formed during thermal treatment, which was evidenced by X-ray diffraction analysis. Near-infrared luminescence spectra at 1.06 žm and 1.53[...]
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Polish Journal of Chemistry
EN Composite nanofiber films of poly(vinyl pyrrolidone) (PVP) containing Tb(AA)3phen were prepared by electrospinning technique. Transmission electron microscopy (TEM) and luminescence spectroscopy were used to characterize the composite nanofiber films. TEMobservation showed that Tb(AA)3phenwas disper[...]
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Molecular and Quantum Acoustics
2004 Vol. 25 79-87
EN The aim of the study is to present the results of investigations of glasses in the system lead-bismuth-gallium-cadmium doped by Ho3+ ions. The thermal and optical properties of glasses have been determined. The structure of lead-bismuth-galliumcadmium glasses using infrared and Raman spectroscopy me[...]
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Polish Journal of Chemistry
2004 Vol. 78 / nr 10 1885-1892
EN The luminescence of Bi3+, Ce3+ and Tb3+ -activated BaB8O13 and Sr-borates are studied. The emission peak of Ce3+ in alkaline earth borates shifts to higher energy side with decreasing ratio of SrO/B2O3. The energy transfer from Ce3+ to Tb3+ in BaB8O13is studied.
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Materials Science Poland
2014 Vol. 32, No. 4 604--609
EN Results of optical-luminescence studies of polydoped photochromic CdBr2 : AgCl,PbBr2 crystals are presented. It is shown that the luminescence decrease vs. time under N2-laser excitation in the range of A-band of Pb2+ absorption is due to photochemical reactions. The empirical model describing the d[...]
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Materials Science Poland
EN Rare earth Eu3+-doped MgNb2O6 red-emitting phosphor was prepared by solid-state reaction. Structure and photoluminescence properties of the samples were characterized by X-ray diffraction (XRD), scan electron microscopy (SEM) and fluorescence spectrophotometer. Meanwhile, the effect of th[...]
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Opto - Electronics Review
EN The interest in LiNbO₃ and LiTaO₃ crystals doped with transition metal or rare eartch ions is related to their potential applications as self-switching and self-frequency doubling laser materials. In the past considerable attention has been paid to LiNbO₃ crystals doped by variety of luminescent ion[...]
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Optica Applicata
EN This work presents the results of optical emission from Eu3+, Tb3+ and Nd3+ luminescence centers in TiO2 thin films. Thin films were prepared by magnetron sputtering from metallic Ti-Eu, Ti-Tb, Ti-Nd targets, respectively. Optical properties were examined [...]
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Materials Science Poland
2015 Vol. 33, No. 1 122--125
EN Rare earth (RE) ions play an important role in the improvement of the optical properties of ceramics. Rare-earth ceramics are commonly used in display panels, fluorescent lamps and lasers. The luminescence properties of Magnesium Boro-Tellurite(MBT) Eu3+ and Dy3+ doped ceramics[...]
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Opto - Electronics Review
2017 Vol. 25, No. 3 209--214
EN Photoluminescence of HgCdTe epitaxial films and nanostructures and electroluminescence of InAs(Sb,P) light-emitting diode (LED) nanoheterostructures were studied. For HgCdTe-based structures, the presence of compositional fluctuations, which localized charge carriers, was established. A model, which[...]
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Geochronometria
EN The determination of gamma dose rates is of prior importance in the field of luminescence dating methods. In situ measurements are usually performed by the insertion of dosimeters or a porta-ble gamma spectrometer cell in sediments. In this paper, Monte-Carlo simulations using the GEANT4 toolkit all[...]
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Materials Science Poland
2015 Vol. 33, No. 3 537--540
EN Shuttle-like BaMoO4 microstructure has been successfully synthesized from Ba(NO3)2 4H2 O and Na2 MoO4 2H2 O as starting materials in ethylene glycol solvent containing 20 mL 5 M NaOH by microwave radiation at 180Wfor 30 min[...]
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Materials Science Poland
2015 Vol. 33, No. 4 685--691
EN Trivalent lanthanide ions display fascinating optical properties. Therefore, the rare-earth complexes of terbium fumarate heptahydrate and GdTb fumarate heptahydrate were grown by using a single gel diffusion technique. The crystals were characterized by different physicochemical techniques of chara[...]
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Archives of Metallurgy and Materials
EN This paper presents the results of the synthesis temperature on the properties of the ceramic powders of SrSi2O2N2:Eu2+ obtained by the solid-phase reaction. Synthesis was carried out in the temperature range of 1250-1650°C for 2 hours in nitrogen flow in[...]
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Materials Science Poland
2016 Vol. 34, No. 4 780--785
EN In this investigation, Eu3+ doped YBO3 phosphors were synthesized by conventional solid state method at 1100°C under atmosphere condition. Meanwhile, different amounts of LiCl, BaCl2 and CaCl32 were used as the flux compounds to modify the morphology of the phosphor[...]
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Archives of Metallurgy and Materials
EN In this paper YVO4:Dy3+ was synthesized via solid state method at 1100°C and effects of different quantities of SiO2 particles on microstructure and photoluminescence properties were investigated in details. To study the microstructure and properties of these composi[...]
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