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- W2084411301 abstract "Eu2+-activated LiBaPO4 phosphor was synthesized by conventional solid-state reaction. The photoluminescence excitation and emission spectra, the temperature dependent luminescence intensities (12−450 K), and decay curves of the phosphor were investigated. With the increasing of temperatures, the emission bands of LiBaPO4:Eu2+ show the abnormal blue-shift and the decreasing of emission intensity. The natures of the Eu2+ emission in LiBaPO4, for example, the luminescence quenching temperature, and the activation energy for thermal quenching (ΔE), were reported. The afterglow fluorescence was detected in LiBaPO4:Eu2+ phosphor. Together with the Eu2+ luminescence, Eu3+ ions with the abnormal crystal field were observed. The site-selective excitation in the 5D0 → 7F0 region for Eu3+ ions, emission spectra, and decay curves have been investigated using a pulsed, tunable, and narrowband dye laser to detect the microstructure and crystallographic surrounding of Eu3+,2+ at Ba2+ sites in LiBaPO4. The multiple sites structure of Eu2+ and Eu3+ ions in LiBaPO4 lattices was suggested. The lower quenching temperature, afterglow, and luminescence mechanism were discussed. The photoluminescence quantum efficiencies of LiBaPO4:Eu2+ were measured and compared with the reported phosphors. Different from the published data on LiBaPO4:Eu2+, this investigation indicates that LiBaPO4:Eu2+ is not a good phosphor candidate applied in white light emitting diode." @default.
- W2084411301 created "2016-06-24" @default.
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- W2084411301 date "2011-01-19" @default.
- W2084411301 modified "2023-10-18" @default.
- W2084411301 title "Luminescence and Microstructural Features of Eu-Activated LiBaPO<sub>4</sub> Phosphor" @default.
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- W2084411301 doi "https://doi.org/10.1021/cm102854p" @default.
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