【摘要】 通过传统的高温固相法成功的制得了一系列紫外激发的硅酸盐荧光粉Na₂Ca₃Si₂O₈∶Tb³⁺,Eu³⁺。X射线衍射（XRD）研究表明所制得的荧光粉为纯相。在Na₂Ca₃Si₂O₈∶Tb³⁺,yEu³⁺荧光粉体系中,随着Eu³⁺的掺杂浓度增大,发射光谱中Tb³⁺的特征峰发光强度降低而Eu³⁺的不断升高,并且荧光寿命不断减小,说明了Tb³⁺和Eu³⁺之间能量传递方式是交换相互作用,能量传递效率（ET）达到了15.8%。此外,通过CIE色坐标观察到,随着Eu³⁺浓度的增加,样品从绿色变成黄色,最终变成红色。由于它多彩的颜色变化,所以它是一种用于制作多彩LED的良好材料。更多还原

【Abstract】 A group of ultraviolet excited phosphors based on silicate host matrix,Na₂Ca₃Si₂O₈∶Tb³⁺,Eu³⁺,have been prepared by a high-temperature solid-state reaction method. X-ray diffraction（XRD）patterns have been investigated which confirms the product is single phase. Furthermore,With the increase of Eu³⁺ doping concentration,the emission intensity of the characteristic peak of Tb3 +decreases while the Eu³⁺ rises in the emission spectrum and the fluorescence lifetime keeps decreasing,which prove the existence of energy transfer between Tb³⁺ and Eu³⁺ and it occurs via exchange interaction mechanism with ET efficiency of 15. 8%. In addition,Using CIE color coordinates for analysis,the color-tunable emissions from Na₂Ca₃Si₂O₈∶Tb³⁺,Eu³⁺ microcrystals can be realized,tuned from green,yellow and eventually to red with different concentration of Eu³⁺,making it as an excellent phosphor in the multicolor-emitting LED.更多还原