Radioluminescence enhancement in Eu3+-doped Y3Al5O12 phosphors by Ga substitution

Rezende, Marcos V. dos S.; Paschoal, C. W. A.

doi:10.1016/j.optmat.2015.05.019

Cited by 17 publications

(1 citation statement)

References 45 publications

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“…Moreover, annealing of the blue YAG:Eu caused an increase of the intensity of photoluminescence peaks reportedly due to 5 D 1 → 7 F 2 , 5 D 2 → 7 F 4 , 5 D 0 → 7 F 1 , 5 D 2 → 7 F 5 , and 5 D 1 → 7 F 4 transitions of the Eu 3+ center at 590, 607, 624, 647, and 709 nm. However, these assignments are definitely incorrect (see for example refs − ). PL spectra under the 365 nm excitation of these YAG crystals grown under 100% Ar atmosphere in ref were shown only in the 550–750 nm spectral range, and therefore, it is impossible to determine whether there was any Eu 2+ emission in the blue region, i.e., below 550 nm.…”

Section: Introductionmentioning

confidence: 99%

Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

et al. 2016

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A set of Eu-doped Y 3 Al 5 O 12 (YAG) phosphors in the powder form was successfully synthesized by multiple-step solid-state reaction under the reducing Ar:5%H 2 atmosphere. Their physical properties were investigated by means of X-ray diffraction, time-resolved luminescence spectroscopy, and electron paramagnetic resonance (EPR). Special attention was given to wellgrounded confirmation of Eu 2+ occurrence in the YAG structure. Xray diffraction confirmed the presence of a major YAG phase in all samples. The influence of Eu concentration, form of doping (EuS, EuF 2 , or Eu 2 O 3 ) and number/form of annealing steps was studied. Corresponding characteristics were measured and evaluated in a broad temperature range (8−800 K). The correlated measurements showed that the single Eu 2+ ions stabilized in YAG in the yttrium position are responsible for the 440 nm emission. The corresponding lowest energy excitation band is situated at 300 nm, and the radiative lifetime of Eu 2+ emission is about 500 ns. A phenomenological model of excited state dynamics was used to explain the experimentally observed features. Possible practical exploitation of the Eu 2+ center in the YAG host is discussed.

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Section: Introductionmentioning

confidence: 99%

Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

et al. 2016

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Solid state synthesis and tunable luminescence of LaNbTiO6:Eu3+

Wang

et al. 2016

J Mater Sci: Mater Electron

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X-ray excited optical luminescence of Eu-doped YAG nanophosphors produced via glucose sol–gel route

Hora

Andrade

Ferreira

et al. 2016

Ceramics International

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Radioluminescence enhancement in Eu3+-doped Y3Al5O12 phosphors by Ga substitution

Cited by 17 publications

References 45 publications

Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

Solid state synthesis and tunable luminescence of LaNbTiO6:Eu3+

X-ray excited optical luminescence of Eu-doped YAG nanophosphors produced via glucose sol–gel route

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Radioluminescence enhancement in Eu3+-doped Y3Al5O12 phosphors by Ga substitution

Cited by 17 publications

References 45 publications

Eu2+ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

Eu2+ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

Solid state synthesis and tunable luminescence of LaNbTiO6:Eu3+

X-ray excited optical luminescence of Eu-doped YAG nanophosphors produced via glucose sol–gel route

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Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study

Eu²⁺ Stabilization in YAG Structure: Optical and Electron Paramagnetic Resonance Study