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The luminescence properties of Yb3+ and Nd3+-activated strontium-silicon-oxynitrides have been studied by hydrothermal synthesis process. The X-ray diffraction (XRD) measurement, absorption spectrum, and photoluminescence spectrum of the powder phosphors were presented. It absorbs light efficiently in the blue region (450 nm~500 nm), that shows a single intense broadband emission at 570 nm. Then SrSi...
This contribution reports on luminescence properties of divalent ytterbium alpha-SiAlON were synthesized by hydrothermal synthesis reaction, α- SiAlON is a good host material for yellow phosphors, combines with blue LED light that it stimulates in the phosphor to generate a whitish light. The X-ray diffraction (XRD) measurement, absorption spectrum, and photoluminescence spectrum of the powder phosphors...
A novel yellow oxynitride phosphor, Ca- α-SiAION:Eu2+ with compositions of Ca(NO3)2, Na2SiO3, NaAIO2 and Eu(NO3)3, was prepared by hydrothermal synthesis reaction. The X-ray diffraction (XRD) measurement, absorption spectrum, photoluminescence spectrum, and chromaticity of the powder phosphors were presented. It absorbs light efficiently in the NUV spectral region (280nm ˜ 350nm) and blue region (380nm...
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