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Reduction of Eu3+ to Eu2+ in MAl2Si2O8 (M = Ca, Sr, Ba) in air condition

By Zhang CM, Yang J, Lin CK, Li CX and Lin J


In general, the reduction of Eu3+ to Eu2+ in solids needs an annealing Process in a reducing atmosphere. in this paper, it is of great interest and importance to find that the reduction of Eu3+ to Eu2+ can be realized in a series of alkaline-earth metal aluminum silicates MAl2Si2O8 (M = Ca, Sr, Ba) just in air condition. The Eu2+-doped MAl2Si2O8 (M = Ca, Sr, Ba) powder samples were prepared in air atmosphere by Pechini-type sol-gel process. It was found that the strong hand emissions of 4f(6)5d(1)-4f(7) from Eu2+ were observed at 417, 404 and 373 nm in air-annealed CaAl2Si2O8, SrAl2Si2O8 and BaAl2Si2O8, respectively, under ultraviolet excitation although the Eu3+ precursors were employed. In addition, under low-voltage electron beam excitation, Eu2+-doped MAl2Si2O8 also shows strong blue or ultraviolet emission corresponding to 4f(6)5d(1)-4f(7) transition

Topics: SOL-GEL SYNTHESIS, OPTICAL-PROPERTIES, LUMINESCENCE, PHOSPHOR, PARTICLES, FILMS, FLUORESCENCE, FELDSPARS, SILICATES, SPECTRA, Optical properties, Luminescence, Bore, Particles, Photography--Films, Finite volume method, Fluorescence, Feldspars, Silicates, Infrared spectra, Spectrum analysis, OPTICAL CONSTANTS, OPTISCHE EIGEN SCHAFTEN, PROPRIETES OPTIQUES, OPTICAL PROPS, 发光, EMISSION SPECTRA, candoluminescence, ionoluminescence, Stokes law (optical), triboluminescence, mechanoluminescence, INFRARED LUMINESCENCE, glow, noctilucence, phosphorescence, 摩擦发光, 无机发光材料, [+], BOR, BORON, CARBON, CARBONE, KALIUM, KOHLENSTOFF, PHOSPHOR, PHOSPHORE, PHOSPHORUS, POTASSIUM, POTASSIUM (FRANCAIS), SCHWEFEL, SOUFRE, SULFUR, SULPHUR, TUNGSTEN, TUNGSTENE, URAN, URANIUM, URANIUM (FRANCAIS), VANADIUM, VANADIUM (DEUTSCH), VANADIUM (FRANCAIS), WOLFRAM, WOLFRAM (DEUTSCH), YTTRIUM, YTTRIUM (DEUTSCH), YTTRIUM (FRANCAIS), Size of particles, GRAINS (FRANCAIS), PARTICULES, TEILCHEN, Microparticles, Photographic film, Films, Motion pictures, Movies, Cinema, Feature films--History and criticism, Moving-pictures, Microfilms, Filmstrips, Film slides, Film strips, Slidefilms, anodised layers, anodized layers, claddings, CVD coatings, chemical vapor deposited coatings, chemical vapour deposited coatings, CVD thin films, decorative coatings, electrophoretic coatings, fission reactor fuel claddings, foils, MOCVD coatings, optical fibre cladding, optical fiber cladding, protective coatings, optical fibre, plasma arc sprayed coatings, plasma sprayed coatings, plasma CVD coatings, plasma chemical vapour deposited coatings, plasma deposited coatings, polymer films, polymer coatings, vacuum deposited coatings, vacuum deposited thin films, vapour deposited coatings, vapor deposited coatings, vapor deposited thin films, vapour deposited thin films, ELEKTROPHORETISCHE UEBERZUEGE, REVETEMENTS ELECTROPHORETIQUES, PLASMALICHTBOGEN-SPRUEHUEBERZUEGE, REVETEMENTS PAR PROJECTION AU PLASMA, Motion Pictures (Entertainment), 有限体积法, Art films, Cinefilms, Moving image materials, 荧光, X RAY FLUORESCENCE, atomic fluorescence, cooperative resonant Stokes radiation, molecular fluorescence, X-ray fluorescence, spontaneous emission, fluorescent emission, X-ray fluorescence analysis, 自发发射, 原子荧光, SILICATES (FRANCAIS), SILIKATE, silicate minerals, 光谱, Spectrum, Infra-red, Spectrum, Infrared, SPECTRA, spectrum, IR spectra, optical spectra, matrix isolation spectra, multiphoton spectra, three-photon spectra, multiphoton spectroscopy, three-photon spectroscopy, quantum beat spectra, absorption spectra, light absorption spectra, light reflection spectra, optical absorption spectra, optical reflection spectra, reflection spectra, Stokes lines, time resolved spectra, transition moments, tunnelling spectra, IETS, inelastic electron tunnelling spectra, tunneling spectra, two-photon spectra, visible spectra, 谱, 光谱学, Analysis, Spectrum, Spectrochemical analysis, Spectrochemistry, Spectroscopy, atomic emission spectroscopy, atomic fluorescence spectroscopy, beam-foil spectra, radiation quenching, fluorescence quenching, luminescence quenching, quenching (optical), fluorimetry, ICP-AES, inductively coupled plasma-atomic emission spectrometry, SPECTRES, SPEKTRA, ANALYSE SPECTROCHIMIQUE, COLORIMETRIC ANALYSIS, SPECTROPHOTOMETRIC ANALYSIS, SPEKTROCHEMISCHE ANALYSE, optical spectrum, spectroscopic analysis, spectrometry, spectral analysis, spectrographic analysis, spectrometric analysis, 发光猝灭, Spectrography
Year: 2009
DOI identifier: 10.1016/j.jssc.2009.04.009
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