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A series of LiY1-xEux(MoO4)2 red-emitting phosphors were synthesized by sol-gel technique. The phase impurity and spectroscopic properties were characterized by X-ray diffraction (XRD) and photo-luminescence (PL) spectra respectively. The effect of Eu3+ doping con-centration, annealing temperature and the molar ratio of citric acid to the total metal cations (C:M) on the optical properties of the red phos-phors were studied and optimized. It was found that all the samples could be excited efficiently by blue light (465 nm), which was well coin-cident with the emission of GaN based LED chips. The luminescent intensity reached maximum when annealing temperature was 750 ?C and Eu3+ doping concentration was 5% with C:M=3:1.
A series of LiY1-xEux (MoO4) 2 red-emitting phosphors were synthesized by sol-gel technique. The phase impurity and spectroscopic properties were characterized by X-ray diffraction (XRD) and photo-luminescence of Eu3 + doping con-centration, annealing temperature and the molar ratio of citric acid to the total metal cations (C: M) on the optical properties of the red phos-phors were studied and optimized. It was found that all the samples could be The luminescent intensity reached maximum when annealing temperature was 750? C and Eu3 + doping concentration was 5% with C: M = 3 :1.