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- W2521851572 abstract "On this paper, polycrystalline samples of the tetragonal systems BaBi2Nb2O9 (BBN) and BBN co-doped with Er3+/Yb3+ (BBN: 0.04Er3+yYb3+, where y=0.02, 0.04, 0.06 and 0.08 mol%) were synthesized by the solid state method. The crystalline structure and photoluminescent properties of the ceramic phosphors were investigated by powder X-ray diffraction (PXRD), Raman spectroscopy and spectral analysis of up-conversion (UC) emission. The results reveal that all compositions crystallize in the I4/mmm space group at room temperature, and show UC green emissions (centered at 525 nm and 550 nm) and red (around 660 nm) coming from (2H11/2, 4S3/2→4I15/2) and (4F9/2→4I15/2) transitions, respectively, under excitation at 980 nm. Increasing variations of the Yb3+ sensitizer concentration in the host BBN, lead to a significant intensity increase in both UC emissions due to the efficiency of the energy-transfer process. The BBN: 0.04 mol%Er3+0.08 mol%Yb3+ composition showed the higher intensity bands, thus establishing the BBN as an alternative host material for luminescent centers." @default.
- W2521851572 created "2016-09-30" @default.
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- W2521851572 date "2017-03-01" @default.
- W2521851572 modified "2023-09-30" @default.
- W2521851572 title "Up-conversion emission of Er 3+ /Yb 3+ co-doped BaBi 2 Nb 2 O 9 (BBN) phosphors" @default.
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- W2521851572 doi "https://doi.org/10.1016/j.jlumin.2016.08.011" @default.
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