摘要
用常规的高温合成法合成了CaO-SiO2-B2O3∶Eu2O3玻璃,探讨了玻璃的最佳合成温度、玻璃的网络结构并研究了其发光性质。在CaO-SiO2-B2O3∶Eu2O3玻璃体系中观察到了Eu3+的发射光谱。样品的发射光谱有三个主要荧光发射峰,位于591nm左右的发射峰对应于Eu3+的5D0-7F1跃迁发射,位于618nm左右的发射峰对应Eu3+的5D0-7F2跃迁发射,位于650nm左右的发射峰对应于Eu3+的5D0-7F3。研究了掺杂Eu3+浓度对其发光强度的影响。并研究了Eu3+的发光强度与玻璃厚度的关系,玻璃的最佳厚度在2.0mm左右。光谱性质表明,这种玻璃体系能够把太阳光中的紫外光转换成红光,从而增强红光的发射强度。我们可以利用这些玻璃的发光性质来制备农用转光玻璃。
CaO-SiO2-B2O3∶Eu2O3 glasses are synthesized in air atmosphere with conventional high temperature process. The optimal temperature of synthesis ,the structure of network and the luminescent properties of the glasses are studied. The fluorescence spectrum of Eu^3＋ is observed in CaO-SiO2-B2O3 ： Eu2O3 glasses. The fluorescence spectrum of the sample has three major emission bands peaking at 591nm, 618nm and 650nm,respectively. The strongest emission band peaks at 618nm. The emission bands peaking at 591nm, 618nm and 650nm correspond to the ^5D0→^7F1 transition,^5D0→^7F2 transition and ^5D0→^7F3 transition,respectively. The study on the effect of the concentration of Eu^3＋ and the thickness of glass on luminescent intensity shows that the best thickness is about 2mm, The luminescent properties of CaO-SiO2-B2O3 ：Eu2O3 glasses indicate that the glass can convert the ultraviolet in the sunlight into red light, thus increasing the intensity of red light. We can take advantage of the luminescent properties of these glasses to make kinds of light-conversion glass for agriculture.
出处
《稀土》
EI
CAS
CSCD
北大核心
2007年第3期34-37,共4页
Chinese Rare Earths
基金
湖南省自然科学基金项目资助(02JJY2020)
关键词
无机非金属材料
发光性质
稀土激活玻璃
转光
inorganic nonmetal material
luminescent properties
rare earth activated glass flight-conversion
