本文研究了NH4Cl助熔剂对Li2SrSiO4:1%Dy3+晶体结构、形貌、发光强度和色坐标的影响,并对其作用机理进行了探讨。研究表明,加入2%NH。C1可以改变Li2SrSiO4:1%Dy3+的反应过程,形成适量液相,抑制杂相的产生并形成表面光滑的球形颗粒。加入2名NH4Cl,Li2SrSiO4:1%Dy3+发光强度提高了110名,色坐标(0.262,0.293)位于白光区域。
The effect of NH4Cl flux on the crystal structure, morphology, luminous intensity and the Commission International del'Eclairage (CIE)chromaticity coordinates of Li2SrSiO4: 1%Dy3+ was discussed, and the mechanism of action of NH4Clflux was presented. The results indicated that the reaction process in the synthesis of Li2SrSiO4: 1% Dy3+ could be changed due to the formation of proper fluid phase, and the purity phase with sphere-like grain and smooth surface was produced by using 2%NH,Cl. The luminous intensity of Li2SrSiO,: Dy3+ was increased 110% by adding of 2%NH4Cl compared with that without NH4Cl, and the CIE chromaticity coordinates (0.262,0.293)moved toward the ideal white light coordinates.