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- W4385202282 abstract "Two novel phosphors LiBa4(1‒x)Eu4xTa3O12 (H-LBTO:xEu3+) and Li0.25Ba1‒xEuxTa0.75O3 (C-LBTO:xEu3+) were prepared successfully by a molten salt method. The transformation between these two structures was realized by changing the sintering temperature or changing the Eu3+ ions concentration, which was also demonstrated by the X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectra (DRS), and photoluminescence excitation (PLE) analyses. Both the sintering temperature and the Eu3+ ions doping concentration have significant impact on the formation of the crystal phase. All these phosphors sintered at 1023 K exhibit two major luminescence lines at 594 and 614 nm under near-UV light of 395 nm excitation, corresponding to Eu3+ ions typical transitions of 5D0→7F1 and 5D0→7F2. The optimum concentration of Eu3+ ions is 9 mol% for C-LBTO:xEu3+ samples and the quenching interaction type is the nearest-neighbor ion interaction. The thermal stability of the C-LBTO:0.09Eu3+ sample was investigated in detail and the device application further suggests that C-LBTO:0.09Eu3+ can be used as a red phosphor for near-UV excited w-LEDs in lighting." @default.
- W4385202282 created "2023-07-25" @default.
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- W4385202282 date "2023-07-01" @default.
- W4385202282 modified "2023-09-22" @default.
- W4385202282 title "Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application" @default.
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- W4385202282 doi "https://doi.org/10.1016/j.jre.2023.07.014" @default.
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