摘要
采用高温固相反应法制备了Li(4-3x)W2O8:Eux系列钨酸盐红色荧光粉,探讨了其合成工艺条件,确定了Eu3+的最佳含量为x=1,试样的最佳反应温度为850℃。该荧光粉具有较宽的激发光谱,适合与近紫外、蓝光芯片配合使用。其发射光谱主峰位于615nm,色坐标位于(X=0.666,Y=0.331)左右,具有较高的色纯度。因此,这种荧光粉是一种可能应用在白光LED上的红色荧光粉材料。
A series of Li（4-3x） W2O8： Eux red-emitting phosphors were synthesized by solid-state reaction. The synthesis condition of the phosphors was discussed. The optimum content of Eu3 ＋ is x = 1 and the optmium reaction temperature is 850℃ . The excitation and emission spectra showed that this phosphor could be effectively excited by ultraviolet and blue light. The wavelength of emission peak locates at 615nm,and the chromaticity coordinates are X = 0. 666,Y = 0. 331 ,which indicate the LiW2O8： Eu phosphor may be a good candidate phosphor for LED application.
出处
《照明工程学报》
北大核心
2010年第4期85-87,97,共4页
China Illuminating Engineering Journal
基金
江苏省科技创新与成果转化专项(BA2008049)
