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- W2054027837 abstract "In this study, 30 at% Er:RETaO<sub>4</sub> (RE = Sc, Y, Gd, Lu) polycrystalline powders were synthesized by the solid-state method. Their structures were determined by the Retvield refinement to X-ray powder diffraction. The optical spectra of the trivalent erbium ions in monoclinic RETaO<sub>4</sub> (RE = Sc, Y, Gd, Lu) polycrystalline powders was investigated by absorption and emission measurements at room temperature. Under the excitation of 970 nm laser, the green photoluminescence of <sup>2</sup>H<sub>11/2</sub>, <sup>4</sup>S<sub>3/2</sub>→<sup>4</sup>I1<sub>5/2</sub> were observed. The 1 μm and 1.5 μm infrared emissions were also surveyed. The fluorescence decays of Er<sup>3+</sup> from the multiplets <sup>4</sup>S<sub>3/2</sub> and <sup>4</sup>I1<sub>3/2</sub> were studied at room temperature. It is found that the decay curves from the multiplet <sup>4</sup>S<sub>3/2</sub> exhibit a non-exponential behavior, which may be due to cross-relaxation processes. At the same time, we investigated that the 2.8μ (due to the transition <sup>4</sup>I<sub>11/2</sub>→<sup>4</sup>I<sub>13/2</sub>) luminescence spectra excited by 808 nm laser." @default.
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- W2054027837 date "2011-11-23" @default.
- W2054027837 modified "2023-10-11" @default.
- W2054027837 title "Structural and spectral investigations on heavily Er<sup>3+</sup>doped RETaO4 (RE = Sc, Y, Gd, Lu) polycrystalline powders" @default.
- W2054027837 doi "https://doi.org/10.1117/12.910449" @default.
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