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以低温燃烧合成法制备了Ba_xNa_yY_zF_(2x+y+3z+3 m):Er_m~(3+)上转换荧光粉,通过X射线衍射仪和扫描式电子显微镜对荧光粉的物相及形貌进行分析,采用正交实验法得出最佳配方。通过测试Er~(3+)和Y~(3+)掺杂浓度不同的样品的上转换发光性能,研究了掺杂浓度对红绿光上转换的影响。结果表明:增大Y~(3+)的掺杂浓度,有利于绿光上转换过程;增大Er~(3+)的掺杂浓度,有利于红光上转换过程。
The Ba_xNa_yY_zF_ (2x + y + 3z + 3m): Er_m ~ (3+) upconverting phosphors were prepared by low temperature combustion synthesis. The phase and morphology of the phosphors were characterized by X-ray diffractometry and scanning electron microscopy Analysis, using orthogonal experiment to draw the best formula. The upconversion luminescence properties of samples with different doping concentrations of Er 3+ and Y 3+ were studied. The effects of doping concentration on the upconversion of red and green light were investigated. The results show that increasing the doping concentration of Y ~ (3 +) is beneficial to the upconversion of green light; increasing the doping concentration of Er ~ (3+) is beneficial to the upconversion of red light.