Transition metal (Cr3+) and rare earth (Eu3+, Dy3+) ions used as a spectroscopic probe in compositional-dependent lead borate glasses

Pisarski, Wojciech A.; Pisarska, Joanna; Dominiak‐Dzik, G.; Ryba‐Romanowski, W.

doi:10.1016/j.jallcom.2009.05.039

Cited by 56 publications

(8 citation statements)

References 27 publications

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“…In the Eu 3+ luminescence bands assigned to magnetic-dipole 5 D 0 -7 F 1 transition, it was possible to observe three resolved components (Stark levels), and previous studies, (i.e. [25,26]), associated the presence of three peaks for 5 D 0 -7 F 1 transition as indication of low symmetry around the Eu 3+ ions. In order to study this transition, a deconvolution of the background subtracted signal was carried out.…”

Section: Discussionmentioning

confidence: 62%

Chemical tunability of europium emission in phosphate glasses

Cicconi

Veber

Ligny

et al. 2017

Journal of Luminescence

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International audienceIn this study the correlation between bulk chemistry and optical properties for a set of Eu-bearing phosphate glasses, containing different alkali elements, synthetized in air and under NH3 flux, was investigated. The chemistry of the glass strongly influences several properties and the effects of bulk chemistry and synthesis conditions on glass structure and on thermal and optical properties are discussed. In alkali-phosphate glasses studied by absorption and photoluminescence spectroscopy we verified that Eu2+ emission band shifts toward higher wavelengths by substituting the alkali cation (Na

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Section: Discussionmentioning

confidence: 62%

Chemical tunability of europium emission in phosphate glasses

Cicconi

Veber

Ligny

et al. 2017

Journal of Luminescence

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“…In this case, the same Gaussian-fitting procedure was applied to evaluate spectroscopic parameters. The relative integrated line intensity ratios were nearly twice reduced, suggesting the presence of chromium ions in lower crystal-field sites with increasing PbO concentration [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Novel Multicomponent Titanate-Germanate Glasses: Synthesis, Structure, Properties, Transition Metal, and Rare Earth Doping

et al. 2020

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Novel multicomponent titanate-germanate glasses singly doped with transition metal (Cr3+) and rare earth ions (Eu3+) were synthesized and the glass transition temperatures and thermal stability parameters were determined using DSC measurements. X-ray diffraction analysis confirmed fully amorphous nature of the received samples. Their structural and optical properties were compared with germanate glasses without TiO2. Correlation between local structure and optical properties in titanate-germanate glasses is well evidenced by FT-IR, Raman, EPR, and luminescence spectroscopy. In particular, luminescence spectra and their decays are examined for glass samples, where GeO2 was partially substituted by TiO2.

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“…Luminescence of Eu 3+ is especially useful to probe the local symmetry and bonding characteristics of luminescent centers in a host lattice on account of its unsplit 7 F 0 ground state and relatively simple energy level scheme. The symmetry of the crystal site in which Eu 3+ is located can be determined by the intensity ratio between 5 D 0 → 7 F 2 and 5 D 0 → 7 F 1 transition emissions in ELCB [64][65][66][67]. Here, the ratio is 1.9076 in ELCB phosphor from Figure 4, indicating that 5 D 0 → 7 F 2 electric dipole transition is dominated and Eu 3+ is in an inversion asymmetrical site.…”

Section: Intensity Parameters Of the Spectroscopic Probementioning

confidence: 95%

Rare Earth Doped Lanthanum Calcium Borate Polycrystalline Red Phosphors

Xiong

Zhu

Zhao

et al. 2014

Advances in Materials Science and Engineering

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Single-phased Sm3+doped lanthanum calcium borate (SmxLa2−xCaB10O19, SLCB,x=0.06) polycrystalline red phosphor was prepared by solid-state reaction method. The phosphor has two main excitation peaks located at 398.5 nm and 469.0 nm, which are nicely in accordance with the emitting wavelengths of commercial near-UV and blue light emitting diode chips. Under the excitation of 398.0 nm, the dominant red emission of Sm3+in SLCB phosphor is centered at 598.0 nm corresponding to the transition of4G5/2 → 6H7/2. The Eu3+fluorescence in the red spectral region is applied as a spectroscopic probe to reveal the local site symmetry in the host lattice and, hence, Judd-Ofelt parametersΩt (t=2, 4)of Eu3+in the phosphor matrix are derived to be3.62×10-20and1.97×10-20 cm2, indicating a high asymmetrical and strong covalent environment around rare earth luminescence centers. Herein, the red phosphors are promising good candidates employed in white light emitting diodes (LEDs) illumination.

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Transition metal (Cr3+) and rare earth (Eu3+, Dy3+) ions used as a spectroscopic probe in compositional-dependent lead borate glasses

Cited by 56 publications

References 27 publications

Chemical tunability of europium emission in phosphate glasses

Chemical tunability of europium emission in phosphate glasses

Novel Multicomponent Titanate-Germanate Glasses: Synthesis, Structure, Properties, Transition Metal, and Rare Earth Doping

Rare Earth Doped Lanthanum Calcium Borate Polycrystalline Red Phosphors

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