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中文摘要：
采用溶胶-凝胶法,在空气环境中合成了蓝白色Sr2SiO4：Ce^3＋荧光材料,合成温度为900℃,这远低于固相法制备同类硅酸盐材料所需温度.X射线衍射图表明,所得样品主要为纯相Sr2SiO4晶体.由扫描电子显微镜图像可知,样品一次颗粒尺度在2μm以下.处于254 nm紫外光激发下,样品发射光谱为峰值位于472 nm的不对称单峰宽带谱,是典型的蓝白光发射.监测472 nm发射峰,得到其激发谱为近紫外连续光谱峰值位于272 nm,321 nm.通过改变Ce^3＋浓度,进一步研究了参杂浓度对发光强度的影响.
英文摘要：
In the air,the Sr2SiO4：Ce^3＋ phosphors were prepared in a sol-gel progress. The X-ray diffraction image show that the samples synthesized at 900℃ were pure Sr2SiO4：Ce^3＋,which lower than solid state reaction method. The scan electron microscope image display that the particle size about 2 μm without triturating Excited by a radiation of 272 nm, the phosphors emitting a strong blue-white fluorescence, and its emission spectrum shows a broad band with a unsymmetrical peak at 470 nm. The excitation spectrum of the Sr2SiO4：Ce^3＋ phosphors display a broad band with two peaks around 272 nm and 321 nm near the band of ultraviolet.
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