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Sr_(0.975)Al_2Si_2O_8∶Eu_(0.025)~(2+)系列荧光粉利用高温固相法合成,系统研究了预烧温度、预烧时间、烧成温度和助溶剂硼酸的量对荧光体晶体结构和发光性能的影响;研究结果表明,各试样均为单斜晶系SrAl_2Si_2O_8,荧光体的X射线衍射强度、荧光体的晶粒尺寸及荧光体的发射强度,均随着预烧温度、预烧时间、烧成温度和助溶剂硼酸量的增加,呈先增加后减小的变化趋势。当预烧温度为1000℃,预烧时间为150 min,烧成温度为1250℃,助溶剂硼酸的量为6wt%,制得的荧光体Sr_(0.975)Al_2Si_2O_8∶Eu_(0.025)~(2+)的发光强度最强,优化了合成条件。
The Sr 0.975 Al 2 Si 2 O 8: Eu (0.025) 2+ phosphors were synthesized by solid-state reaction at high temperature. The effects of pre-calcination temperature, pre-calcination time, calcination temperature and amount of boric acid The results show that the samples are monoclinic SrAl_2Si_2O_8, the X-ray diffraction intensity of the phosphor, the crystal size of the phosphor and the emission intensity of the phosphor are both in accordance with the calcination temperature, Burning time, sintering temperature and flux of boric acid increased, the first increase and then decrease the trend. When the pre-calcination temperature is 1000 ℃, the pre-calcination time is 150 min, the calcination temperature is 1250 ℃ and the amount of boric acid is 6wt%, the Sr 0.975 Al 2 Si 2 O 8:Eu 0.025 2+ ) The strongest luminous intensity, optimizing the synthesis conditions.