通过固相法合成LED用Zn1-xMo1-ySiyO4∶Eu3+x红色荧光粉(0.05≤x≤0.30, 0≤y≤0.09), 讨论了助熔剂、温度等合成条件对Zn1-xMo1-ySiyO4∶Eu3+x荧光粉发光性质的影响。 当烧结温度为800 ℃时, 可以生成ZnMoO4纯相目标产物。 由于荧光粉的结晶度和粒径随烧结温度的升高而增大, 所以随着烧结温度的升高, 样品的发光强度有所提高； 当助熔剂Na2CO3的用量约为4%时的样品发射光的强度比未使用助熔剂时明显增强, 说明在此体系中, 当Eu3+取代Zn2+时, Na2CO3充当助熔剂的同时, Na+起到了电荷补偿作用。 荧光光谱实验显示Zn1-xMo1-ySiyO4∶Eu3+x能够被393和464 nm的紫外光激发, 在616 nm处发出强烈的红色荧光。 当Eu3+掺杂量约为20% mol时, Zn1-xMo0.97Si0.03O4∶Eu3+x荧光粉在616 nm处的发光强度达到最大。 在引入Si4+离子后能显著增强Zn1-xMoO4∶Eu3+x的发光强度, 组成为Zn0.80Mo0.97Si0.03O4∶Eu3+0.20样品（激发峰值为393 nm）的荧光强度要比Y2O2S∶Eu3+0.05荧光粉的发光强度强2倍。 所以这种荧光物质能够更好地适用于白光LED。

The phosphors Zn1-xMo1-ySiyO4∶Eu3+x(0.05≤x≤0.30, 0≤y≤0.09) were prepared by solid state reaction technique at 800 ℃. The powder X-ray diffraction patterns of the samples show that the phosphors are of single phase and the doping Eu ion and Si ion have little influence on the host structure. The effects of flux and calcination temperature on the luminescent properties of the phosphors were investigated. The results showed that flux content has effects on the luminescent properties, and the optimized flux content and the best calcination temperature is 4% and 800 ℃, respectively. The presence of the Na+ ion strengthens the photoluminescence intensity of the phosphors. The addition of Na+ ions balanced the charge in samples, enhanced the luminescence intensity of samples, and the luminescence intensity reached the maximum when the doping concentration of Na2CO3 was 4 Wt%. The luminescent properties of Zn0.80Mo1-ySiyO4∶Eu3+0.20 were studied by the excitation and emission spectra, and the influence of Eu3+ and Si4+ concentrations on the luminescent property was discussed. As the calcination temperature rises from 700 to 800 ℃, the emission intensity increases due to the improvement of crystallinity. The excitation spectra consist of a broad band and a series of narrow lines, and the narrow lines are attributed to the intrinsic transition from 7FJ(J=1-4) to 5DJ(J=0, 1) of Eu3+. It was found that the PL emission intensity was enhanced with the increase in the Eu3+ doping ratio and reached a maximum value at x=0.20. The result indicated that Zn1-xMo1-ySiyO4∶Eu3+x phosphors can be excited effectively at 393 and 464 nm light. The presence of the Si4+ ion strengthens the photoluminescence intensity of the phosphors and the strong red emission lines at 616 nm correspond to the forced electric dipole 5D0→7F2 transitions on Eu3+. Compared with Y2O2S∶0.05Eu3+, the obtained Zn0.80Mo0.97Si0.03O4∶Eu3+0.20 phosphor shows an enhanced red emission under 393 nm excitation and the emission intensity of Y2O2S∶0.05Eu3+ is only 50% of that of Zn0.80Mo0.97Si0.03O4∶Eu3+0.20. The optical properties suggest that Zn0.80Mo0.97Si0.03O4∶Eu3+0.20 is an efficient red emitting phosphor for light emitting diode (LED) applications.