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- W4379053296 abstract "A new mixed metal borate, CdTbGaB2O7, was successfully synthesized using the high-temperature solution method and its crystal structure was determined by single-crystal X-ray diffraction with the following unit-cell data: P4̄21m, a = b = 7.3487(1) Å, c = 4.7247(1) Å, V = 255.150(9) Å3, and Z = 2. It belongs to a new member of the melilite family, which features a 3D framework consisting of alternately stacked [Ga(B2O7)]n5n- tetrahedral layers and (Cd2+/Tb3+) cationic layers that are interconnected via B(Ga)-O-(Cd/Tb) bridges. In addition, the solid solutions of CdTb1-xSmxGaB2O7 (0 ≤ x ≤ 0.2) were prepared via the solid-state reaction method. The combined techniques of XRD, SEM, IR/Raman, XPS and PLE/PL were employed to characterize the products. It was found that the CdTb1-xSmxGaB2O7 phosphors simultaneously showed green emission of Tb3+ at 545 nm and orange emission of Sm3+ at 603 nm under excitation at 370 nm. The emission color can be adjusted from green to orange-red by varying the Sm3+ doped content via an energy transfer mechanism. For CdTb0.995Sm0.005GaB2O7, a QY of 13.22% was obtained, and its emission intensity at 423 K was 94% of that at 303 K. These results show that the prepared materials can act as potential color-tunable phosphors for UV w-LEDs." @default.
- W4379053296 created "2023-06-02" @default.
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- W4379053296 date "2023-01-01" @default.
- W4379053296 modified "2023-09-26" @default.
- W4379053296 title "A new melilite-type rare-earth borate CdTbGaB<sub>2</sub>O<sub>7</sub> and multicolor tunable emission in the CdTb<sub>1−<i>x</i></sub>Sm<sub><i>x</i></sub>GaB<sub>2</sub>O<sub>7</sub> (0 ≤ <i>x</i> ≤ 0.2) phosphors" @default.
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- W4379053296 doi "https://doi.org/10.1039/d3ra03002d" @default.
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