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Wyniki wyszukiwania dla: LUMINESCE
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Luminescence properties of different Eu sites in LiMgPO4:Eu2+, Eu3+
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High pressure luminescence and time resolved spectra of LiNbO3:Pr3+
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Electric field and charge induced quenching of luminescence in electroluminescent emitters based on lanthanide complexes
PublikacjaW pracy badano ładunkowe i elektrycznopolowe wygaszanie ekscytonóww układzie dwuamina TPD: organiczny kompleks europu przez pomiar zaników fotoluminescencji w zewnętrznym polu elektrycznym.
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From Structure to Luminescent Properties of B2O3-Bi2O3-SrF2 Glass and Glass-Ceramics Doped with Eu3+ Ions
PublikacjaGlass-ceramics with the composition B2O3 -Bi2O3 -SrF2 were synthesized by the conventional melt-quenching technique and subsequent crystallization of the parental glasses. The temperature at which the ceramization was carried out was selected based on differential scanning calorimetry (DSC) analysis. The structure of the studied materials and the formation of SrF2 nanocrystals were confirmed by the Fourier-transform infrared spectroscopy...
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Induced circularly polarized luminescence for revealing DNA binding with fluorescent dyes
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Intrinsic and defect-related luminescence of YAlO3 and LuAlO3 single crystals and films
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Chiral Diketopyrrolopyrrole-Helicene Polymer With Efficient Red Circularly Polarized Luminescence
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Bacterial luminescence test screening of highly polluted areas in the Odra River
PublikacjaW pracy przedstawiono wyniki badania ekotoksyczności wód i osadów z dorzecza Odry w obrazie testu z zastosowaniem bakterii Vibrio Fischerii. Badania przesiewowe wskazują, że silnie zanieczyszczone są miejsca w okolicy Brzegu Dolnego, ujścia Nysy Kłodzkiej i Małej Panwi.
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Luminescence of Ca(NbO3)2:Pr3+ at ambient and high hydrostatic pressure
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Luminescence of CaWO4:Pr3+ and CaWO4:Tb3+ at ambient and high hydrostatic pressures
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Luminescence Spectra of β-SiAlON/Pr3+ Under High Hydrostatic Pressure
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High pressure and time resolved luminescence spectra of Gd3Ga5O12:Pr3+ crystal
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Luminescence kinetics in silica gel doped with Tb3+ ions and ZnS:Mn2+ nanocrystals
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Luminescence of Gd2(WO4)3:Ln3+at ambient and high hydrostatic pressure
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Influence of high hydrostatic pressure on Eu2+-luminescence in KMgF3:Eu2+ crystal
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High pressure luminescence spectra of CaMoO4:Ln3+(Ln = Pr, Tb)
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Helicene Monomers and Dimers: Chiral Chromophores Featuring Strong Circularly Polarized Luminescence
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An EXAFS study of the local structure of rare-earth luminescence centres in the Ca3Ga2Ge3O12 glass
PublikacjaW pracy przedstawiono wyniki analizy EXAFS danych mierzonych na krawędzi L3 atomów ziem rzadkich takich jak Eu, Ho (0.7 wt.%) oraz Er (1.46 wt.%), którymi domieszkowano szkło 3CaO-Ga2O3-3GeO2. Otrzymane parametry strukturalne opisujące pierwszą powłokę koordynacyjną badanych atomów wskazują, że ich lokalne otoczenie tlenkowe jest jednakowe (niezależne od typu jonu ziemi rzadkiej) i uwzględniając strukturalny nieporządek bardzo...
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Luminescence quenching in KYb(WO4)2-Tb3+: An example of temperature-pressure equivalence
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Intensification of luminescence of Europium-EDTA complex in polyvinyl pyrrolidone films by copper nanoparticles
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Luminescence of Ca(NbO3)2:Pr3+: Pr3+ and self-trapped exciton emission
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Identification of yellow luminescence centers in Be-doped GaN through pressure-dependent studies
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Pressure-induced luminescence quenching in KY(WO 4 ) 2 :Pr 3+
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Lanthanide ions (Eu3+, Er3+, Pr3+) as luminescence and charge carrier centers in Sr2TiO4
PublikacjaA series of strontium orthotitanate (Sr2TiO4) samples doped with 2% of a mole of europium, praseodymium, and erbium were obtained using the solid-state synthesis method. The X-ray diffraction (XRD) technique confirms the phase purity of all samples and the lack of the influence of dopants at a given concentration on the structure of materials. The optical properties indicate, in the case of Sr2TiO4:Eu3+, two independent emission...
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Silver complexes stabilized by large silanethiolate ligands – crystal structures and luminescence properties
PublikacjaBulky silanethiolate and disiladithiolate ligands were applied to synthesize one mononuclear and three trinuclear silver complexes including two cyclic “microclusters” and a linear tri-nuclear silanethiolate complex. All obtained compounds are characterized by X-ray diffraction and FT-IR. NMR and emission spectroscopies were used where possible. The first trinuclear anionic silver thiolate is structurally characterized. The influence...
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Collision-induced luminescence spectra of pyridine bombarded by 1000 eV He+ cations
PublikacjaHere we show collision-induced luminescence spectra measured for collisions of the He+cations with thearomatic six-membered ring of the pyridine molecule (C5H5N). Distinct emission bands due to the CH(A2Δ→X2Πr;B2Σ+→X2Πr;C2Σ+→X2Πr), CN(B2Σ+→X2Σ+), C2(d3Πg→a3Πu), and NH(A3Π→X3Σ−) transitions, aswell as atomic H, He, and C lines have been observed. Apart from the He atoms, all the emitters arise from thefragmentation of the pyridine...
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Bimodal Nd-Doped LuVO4 Nanoprobes Functionalized with Polyacrilic Acid for X-Ray Computed Tomography and NIR Luminescent Imaging
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MPD growth of single crystals of Ce3+ doped Gd3−xLuxAl5−yGayO12 mixed garnets and their luminescent, scintillation and photoconversion properties
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Luminescent GeO2–Pb–Bi2O3 glasses co-doped with Tb3+1 and Eu3+: Excitation energy transfer and color chromaticity
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Thermal behavior of the highly luminescent poly(3-hydroxybutyrate):Eu(tta)3(H2O)2 red-emissive complex
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Novel inorganic xerogels doped with CaWO 4 :xDy: Synthesis, characterization and luminescence properties
PublikacjaA series of novel phosphors based on silica xerogel doped with CaWO4:xDy(III) with various concentration of dysprosium ion was synthesized over a temperature of 800 C. The thermal analysis, XRD measurement and spectroscopic investigations of these materials are presented in this study. Steady state luminescence, luminescence excitation spectra as well as emission spectra have been measured. Under the ultraviolet light, the prepared...
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Enhancing Luminescence and X-ray Absorption Capacity of Eu3+:LaF3 Nanoparticles by Bi3+ Codoping
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A comparison of structural and luminescence properties of lead(II) coordination polymers with isomeric thiophenecarboxylate ligands
PublikacjaTwo new lead(II) coordination polymers with isomeric thiophenecarboxylates, namely [Pb(2tpCOO)2]n (1) and [Pb(3tpCOO)2(H2O)]n (2) (2tpCOO− = thiophene-2-carboxylate, 3tpCOO− = thiophene-3-carboxylate), were synthesized and characterized. Single crystal X-ray crystallography revealed a distorted pentagonal pyramidal geometry {PbO6} around Pb in 1 and a distorted dodecahedral geometry {PbO8} in 2. The distortion derived from the...
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Thermoluminescence and optically stimulated luminescence studies on LiMgPO4 crystallized by micro pulling down technique
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High pressure and time-resolved luminescence spectra of Ca3Y2(SiO4)3doped with Eu2+and Eu3+
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Tb3+ ions in the presence of ZnS:Mn2+ nanocrystals incorporated into silica: Tb3+ and Mn2+ luminescence kinetics
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Study of persistent luminescence and thermoluminescence in SrSi2N2O2:Eu2+,M3+(M = Ce, Dy, and Nd)
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Impact of yttria stabilization on Tb3+ intra-shell luminescence efficiency in zirconium dioxide nanopowders
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Luminescence recognition material as an INHIBIT logic gate in presence of Pb2+ and Cu2+ ions in aqueous solutions
PublikacjaA recognition material consisting of silica xerogel with amino-modified surface selectively recognizes Pb2+ and Cu2+ (but only in presence of Pb2+ ions) in aqueous solutions of other metal ions. The analytical action of the material is based on a significant change in luminescence emission spectra of the material after chemisorption of Pb2+ ions. In the presence of Pb2+ in octahedral coordination environment, a new broad and strong...
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The Luminescence of 1,8-Diazafluoren-9-One/Titanium Dioxide Composite Thin Films for Optical Application
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Eu3+ doped tellurite glass ceramics containing SrF2 nanocrystals: Preparation, structure and luminescence properties
PublikacjaEu3+ doped tellurite glass ceramics containing SrF2 nanocrystals were prepared using melt quenching technique and subsequent heat treatment of glass in 370 °C for different time periods. Thermal properties of glass matrix have been determined based on DSC measurements. XRD and XPS results confirmed formation of SrF2 nanocrystals in glass matrices after annealing at 370 °C. FTIR studies revealed absorption bands in the range of...
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Isostructural zinc and cadmium silanethiolates with bridging biimidazole co-ligands – Enhanced luminescence of zinc complex
PublikacjaTwo dinuclear complexes of zinc and cadmium with silanethiolate and bridging biimidazole ligands are characterized by X-ray diffraction, FT-IR, UV–Vis and emission spectroscopies. The complexes 1 (Zn) and 2 (Cd) are isostructural but exhibit different electronic structures and different character of frontier HOMO orbitals as indicated by DFT calculations. Lluminescence studies prove strong emission properties of zinc complex.
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Linking Macro- and Micro-structural Analysis with Luminescence Control in Oxynitride Phosphors for Light-Emitting Diodes
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Chromium Ion Pair Luminescence: A Strategy in Broadband Near-Infrared Light-Emitting Diode Design
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Synthesis and luminescence characteristics of Dy3+ ions in silica xerogels doped with Ln2−xDyx(WO4)3
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Influence of charge transfer state on Eu 3+ luminescence in LaAlO 3 , by high pressure spectroscopy
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New Coordination Polymers of Selected Lanthanides with 1,2-Phenylenediacetate Linker: Structures, Thermal and Luminescence Properties
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Luminescence enhancement in nanocrystalline Eu2O3 nanorods – Microwave hydrothermal crystallization and thermal degradation of cubic phase
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Structural and luminescence properties of B2O3-Bi2O3-AlF3 glass doped with Eu3+, Tb3+ and Tm3+ ions
PublikacjaThe B2O3-Bi2O3-AlF3 glass system doped with Eu3+, Tb3+, Tm3+ and triply doped with Eu3+/Tm3+/Tb3+ ions in different molar ratios were successfully synthesized. Glass transition and crystallization temperatures were examined by Differential Scanning Calorimetry (DSC) measurements. X-ray Diffraction (XRD) confirmed the amorphous character of the samples. Fourier Transform Infrared Spectroscopy (FTIR) revealed that the glass matrix...
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Influence of plasmon resonance on the luminescence of titanium dioxide thin films doped with rare earth ions
PublikacjaIn this work the study of the optical properties of europium doped titanium dioxide thin films (TiO2:Eu) enhanced by gold plasmonic nanostructures are presented. Plasmonic platforms were manufactured by thermal annealing of thin film of Au, deposited on a Corning glass substrate. As a result of thermal treatment, gold spherical nanostructures with average dimensions of 50 nm were obtained. Luminescent TiO2:Eu film was deposited...