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- W2318763253 abstract "A series of La3BW1–xMoxO9:Eu3+ (x = 0–0.4) polycrystalline powders were prepared by using solid-state reactions. The phase structure, UV–vis absorption spectra, and photoluminescence properties were studied as a function of the Mo/W ratio. When Mo6+ ions are incorporated into the lattice, the characteristic sharp lines in the excitation spectra of Eu3+ monitored at 617 nm are prominently enhanced, which join the ligand-to-metal charge transfer (LMCT) band of La3BW1–xMoxO9:Eu3+ into a broad band ranging from 250 to 450 nm centered at 375 nm. The intensity of the broad excitation band reaches a maximum when the content of Mo6+ ions increases to x = 0.3. On the other hand, the LMCT band around 306 nm decreases and shifts toward the longer wavelength. These features are advantageous to near-UV or blue light GaN-based LED applications. Orbital population analysis by density functional theory calculation (DFT) reveals that the near-UV excitation of La3BW1–xMoxO9:Eu3+ red phosphor is due to the electronic transition from the O 2p orbital to the W 5d and Mo 4d orbitals, respectively. With the introduction of Mo6+ into the lattice, the band gap of La3BW1–xMoxO9 becomes narrower than that of the pure phase La3BWO9." @default.
- W2318763253 created "2016-06-24" @default.
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- W2318763253 date "2014-08-22" @default.
- W2318763253 modified "2023-10-14" @default.
- W2318763253 title "Crystal Structure, Electronic Structure, and Photoluminescence Properties of La<sub>3</sub>BW<sub>1–<i>x</i></sub>Mo<sub><i>x</i></sub>O<sub>9</sub>:Eu<sup>3+</sup> Red Phosphor" @default.
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- W2318763253 doi "https://doi.org/10.1021/ic500748c" @default.
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