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A series of novel red light-emitting phosphors Li2Y4-xEux(WO4)7 were synthesized by solid-state reaction. The phosphors were characterized by XRD and luminescence spectra. The results show that the phosphors can be excited by near-UV light of 395nm effectively. The relative intensity of the sample reaches a maximum when x is 2.8. The main emission line is 5D0→7F2 transition of Eu3+ at 615nm, and they can be used for white LED.

A series of novel reddish-orange phosphors Ca3Y2-xSmxWO9 were synthesized by solid-state method and characterized by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and photoluminescence (PL) spectra. The results showed that these phosphors are tetragonal structures. The optimum calcining temperature was 1100°C, and the sintering time was 3h. The results demonstrated that the optimal doping concentration of Sm3+ in Ca3Y2WO9 was about 1 mol%. The main emission line was 4G5/2→6H7/2 transition of Sm3+ at 593nm, and showed intense reddish-orange.