Synthesis and Luminescence Properties of Eu-doped SiO2-B2O3-NaF Glass

随着高容量和高速度的信息技术的发展,电子学和微电子学的应用在这方面受到一定的限制.由于光子的传播速度比电子快得多,光的频率比电磁波高得多,为提高传播速度和载波密度,信息的载体由电子转到光子是发展的必然趋势.近年来,随着光纤通讯、上转换发光和激光、非线性光学等光电子学的迅速发展,高性能的光学玻璃成为人们瞩目的研究课题之一.The Eu-doped SiO2-B2O3-NaF glass was prepared by sol-gel process, using tetraethoxy Silicane, boric acid and sodium fluoride as starting materials, 0.10 mol(.)L(-1) EuCl3 solution as the dopant. The luminescent properties of Eu3+ doped SiO2-B2O3-NaF phosphors were investigated. The phosphors showed prominent luminescence in pink, the strong emission of Eu3+ comes from electronic transition of D-5(0)-F-7(1) (591 nm) and D-5(0)-F-7(2) (615 nm), which derived from two transition modes of magnetic-dipole and electric-dipole The peak intensity of 591 nm in SiO2-B2O3-NaF matrix is much stronger than it in the other matrixes, it means that SiO2-B2O3-NaF has sensitization on the transition of D-5(0)-F-7(1) (Eu3+). If there are broad bonds in the range of 275similar to380 nm in the excitation spectrum of Eu3+-doped SiO2-B2O3-NaF glass, the emission peak intensity should be intensified. It is because the electron migration CT band of O2--Eu3+. For all Eu3+ concentrations used, the investigation found that when the mass of fraction got to 29.19 x 10(-3), the luminescence intensity reached the summit. And there is a phenomenon of concentration quenching. Investigation with the same concentration of Eu3+ at different annealed temperature, we found that the sample annealed at 400 degreesC, the luminescence intensity achieved its maximum value, and Eu3+ in this matrix had a phenomenon of temperature quenching. The structural characterization of these luminescent materials was carried by used XRD and TEM. The result showed that the phosphor was in amorphous phase.国家重点基础研究发展计划(973计划); 国家自然科学基金; 内蒙古自然科学基金; 内蒙古师范大学和北京大学合作项目SCI(E)中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)93317-3202