中文摘要：

采用溶胶-凝胶法制备了BaO-TiO2-3SiO2∶Eu^3＋发光材料,通过DTA-TG、IR、XRD、SEM、激发和发射光谱图对材料的结构和发光性能进行了研究。结果表明,100℃～200℃之间出现明显失重现象,说明在此过程中凝胶中的吸附水和乙醇等有机物大量挥发,600℃出现失重阶梯并放出热量,发生晶型转变;制备的样品中主要存在Ti-O-Si和Ti-O键;XRD测试证明,材料主要在600℃～1000℃之间发生晶型转变,当经800℃退火处理后,主要以Ba2TiSi2O8晶体结构存在时,材料发光最好。材料制备的最佳退火温度为800℃,Eu^3＋在BaO-TiO2-3SiO2基质中的掺杂量为1.80%（摩尔分数）,发光最好。在612 nm监测波长下,测得的最佳激发波长为可见光465 nm,即在465 nm光激发下,材料发射强度高、单色性好的红光。

英文摘要：

Eu^3＋-doped BaO-TiO2-3SiO2 luminescent materials were preparated by Sol-Gel method.The crystal structure and the luminescent properties of the samples were measured and characterized by DTA-TG,IR,XRD and excitation and emission spectra,respectively.The DTA-TG indicated that there was a significant weight loss between 100 and 200 ℃,which was attributed to the volatilization of water and organic matter.The crystal structure changed due to weight loss and a weak exothermic peak at 600 ℃.The IR spectra showed that the samples are mostly composed of Ti-O-Si and Ti-O bonds.Powder XRD analysis indicated that the crystal structure of the materials changed to Ba2TiSi2O8 between 600 and 1000 ℃,and the luminescence intensity of the materials is optimal when the annealing temperature was 800 ℃.The excitation and emission spectra showed that the best annealing temperature is 800 ℃ for preparing material and the optimum doping amount of Eu^3＋ is 1.80（at%）.The best excitation light is the visible light with the wavelength of 465nm when the wavelength of the monitoring light is 612 nm.