高Eu^(3+)浓度掺杂硼铋钙红光玻璃的制备与发光性能  

Study on the preparation and luminescent properties of calcium bismuth borate red-light glass doped with a high concentration of Eu^(3+)

作　　者：肖青辉 宋碧清 杨军 李子成 游维雄 夏李斌 XIAO Qinghui;SONG Biqing;YANG Jun;LI Zicheng;YOU Weixiong;XIA Libin(School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi Youxinpu Technology Co.,Ltd.,Longnan 341700,China)

机构地区：[1]江西理工大学材料科学与工程学院,江西赣州341000 [2]江西优信普科技有限公司,江西龙南341700

出　　处：《有色金属科学与工程》2018年第5期90-96,共7页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(11464017);江西省自然科学基金资助项目(GJJ150636;GJJ170490);江西理工大学优秀博士论文培养资助项目(YB2016008)

摘　　要：采用传统熔融冷却法制备Eu^(3+)掺杂的硼铋钙红光玻璃,研究不同Eu^(3+)掺杂浓度下,玻璃的密度、摩尔体积、折射率等一般物理性质的变化规律;分析玻璃的激发、发射光谱及玻璃的结构和热稳定性,得到了一种高Eu^(3+)浓度掺杂的红光玻璃.研究表明:随着Eu^(3+)浓度的不断升高,玻璃的密度、折射率、玻璃转化温度和热稳定性逐渐升高,摩尔体积先减小后增大;8%(指摩尔分数,下同)为Eu_2O_3的较优掺杂浓度, 9%为玻璃成玻区中最大Eu_2O_3掺杂浓度.玻璃总体对称性均较低,为非晶态结构;玻璃结构致密程度先增大后减小,其结构单元主要包括[BO_3]三角体、[BO_4]四面体、[BiO_3]三角体和[BiO_6]八面体.制备的荧光玻璃因具有高的Eu^(3+)掺杂浓度、与蓝光芯片的有效匹配度、优良的热稳定性、较低的熔点以及合适的折射率等特点,将有望成为白光LED用玻璃陶瓷的良好基质.Abstract： Eu^3＋-doped calcium bismuth borate glasses emitting red light were prepared by a rapid melt quenching technique. The varying patterns of general physical properties of the glasses such as density, molar volume and refractive index were investigated in different Eu^3＋ doped concentrations. The excitation and emission spectra, structure and thermal stability of the glasses were also analyzed, and red-light glasses doped with a high concentration of Eu^3＋ were prepared. The study showed that the density, refractive index, glass transition temperature （To and thermal stability of glasses gradually increased with the increase of Eu^3＋ concentration. However, the molar volume decreased first and then increased with increasing Eu3 ＋ concentration. 8 mol % of Eu203 was the optimum concentration with the maximum Eu203 concentration in glass forming area being of 9 mol %. The glass structure exhibited a relatively low symmetry with an amorphous state, and its structure was mainly composed of [BO3] trigonal, [BO4] tetrahedron, [BiO3] trigonal and [BiO6] Octahedron. The fluorescent glasses, owing to its high Eu^3＋-doped concentration, an effective matching with blue chip, excellent thermal stability, lower melting point and suitable refractive index, would be a good matrix applied for glass-ceramics used in white LEDs.

关 键 词：EU^3+ 红光 硼铋酸盐玻璃 白光LED 

分 类 号：O482.31[理学—固体物理] TQ127.2[理学—物理]