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- W2396491497 abstract "Novel Y1–x–yVO4: xDy3+, yBi3+ (0.01 ≤ x ≤ 0.05, 0 ≤ y ≤ 0.20) phosphors for light emitting diode (LED) were successfully synthesised by solid-state reaction. The calculation results of electronic structure show that YVO4 has a direct band gap with 3 eV at G. The top of the valence band is dominated by O 2p state and the bottom of the conduction band is mainly composed of O 2p and V 3d states. An efficient yellow emission under near-ultraviolet (365 nm) excitation is observed. Compared with the pure YVO4: Dy3+ samples, the Dy3+, Bi3+ co-doped samples show a more intensive emission peak (at 574 nm) and a new broad emission band (450–770 nm), due to the 4F9/2 – 6H13/2 transition of Dy3+ and the emission of the VO3−4–Bi3+ complex respectively. The optimum chromaticity index of Y1–x–yVO4:xDy3+, yBi3+ (0.01 ≤ x ≤ 0.05,0 ≤ y ≤ 0.20) is (0.447, 0.497), which indicates that YVO4: Dy3+, Bi3+ has higher colour saturation than the commercial phosphor YAG: Ce3+. The effects of concentration of Dy3+, Bi3+, electric states and the photoluminescence properties are discussed in details." @default.
- W2396491497 created "2016-06-24" @default.
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- W2396491497 date "2010-05-01" @default.
- W2396491497 modified "2023-10-11" @default.
- W2396491497 title "A novel yellow emitting phosphor Dy<sup>3+</sup>, Bi<sup>3+</sup>co-doped YVO<sub>4</sub>potentially for white light emitting diodes" @default.
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- W2396491497 doi "https://doi.org/10.1088/1674-1056/19/5/057803" @default.
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