中文摘要：

采用高温固相法合成了用于紫外芯片（UVLED）激发的绿色荧光粉Ca2SrAl2O6：Ce^3＋,Tb^3＋。测量了其激发光谱和发射光谱,结果显示,材料的发射谱由峰值位于497,545,595和623nm的4组窄带组成,其中位于545nm的发射峰最强,样品能发射很好的绿光;监测545nm发射峰,得到的激发谱由位于320～400nm之间的激发带组成,能被UVLED很好地激发。研究了Ca2SrAl2O6荧光粉中Ce^3＋对Tb^3＋发光的敏化现象,发光的敏化作用缘于Ce^3＋和Tb^3＋之间的高效无辐射能量传递。共掺激活剂的最佳掺杂浓度为4mol%。

英文摘要：

Ce^3＋,Tb^3＋ co-doped green phosphor Ca2SrAl2O6 was synthesized by solid state method and its excitation and emission spectra were measured and studied.The results showed that the emission spectrum is composed of four groups of narrow bands and the peaks are located at 497,545,595 and 623 nm.The strongest emission peak islocated at 545 nm and chromaticity coordinate （x,y） is （0.300 5,0.500 2） at 4 mol% Ce^3＋ and Tb^3＋ doping,which indicate that Ca2SrAl2O6：Ce^3＋,Tb^3＋ was a good green phosphor.The excitation spectrum for 545 nm was in the region of 320-400 nm,which indicated that this phosphor could be effectively excited by UVLED.Duo to the overlap of the Ce^3＋ emission bands and the Tb^3＋ excitation bands,the energy transfer between Ce^3＋ and Tb^3＋ is expected to be very efficient.The emission intensity of co-doped Ca2SrAl2O6 phosphor was stronger than that of Tb^3＋ doped phosphor.The luminescence intensity reached the maximum when the concentration of Ce^3＋ and Tb^3＋ was 4 mol%.