Du Nguyen - Academia.edu (original) (raw)
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National Center of Researches in Materials Sciences
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Eu 2+ and (or) Eu 3+ doped Sr 2 SiO 4 phosphors particles were synthesized by a conventional soli... more Eu 2+ and (or) Eu 3+ doped Sr 2 SiO 4 phosphors particles were synthesized by a conventional solid-state reaction technique, and their structural and optical properties were investigated. The X-ray diffraction (XRD) results showed that the obtained phosphors were composed of orthorhombic α'-Sr 2 SiO 4 and monoclinic β-Sr 2 SiO 4 phase. When excited under 256 nm, Sr 2 SiO 4 :Eu 3+ phosphors showed intense emission in the red region. Sr 2 SiO 4 :Eu 3+ phosphors exhibited white emissions (x=0.30, y=0.40, T C =6500 K) ranging from 425 to 650 nm when it was excited by near-ultraviolet (near-UV) light, indicating that Sr 2 SiO 4 :Eu 2+ was a good light-conversion phosphor candidate for near-UV chip.
Eu 2+ and (or) Eu 3+ doped Sr 2 SiO 4 phosphors particles were synthesized by a conventional soli... more Eu 2+ and (or) Eu 3+ doped Sr 2 SiO 4 phosphors particles were synthesized by a conventional solid-state reaction technique, and their structural and optical properties were investigated. The X-ray diffraction (XRD) results showed that the obtained phosphors were composed of orthorhombic α'-Sr 2 SiO 4 and monoclinic β-Sr 2 SiO 4 phase. When excited under 256 nm, Sr 2 SiO 4 :Eu 3+ phosphors showed intense emission in the red region. Sr 2 SiO 4 :Eu 3+ phosphors exhibited white emissions (x=0.30, y=0.40, T C =6500 K) ranging from 425 to 650 nm when it was excited by near-ultraviolet (near-UV) light, indicating that Sr 2 SiO 4 :Eu 2+ was a good light-conversion phosphor candidate for near-UV chip.