摘要
采用超声波作用下的均匀沉淀法制备Ca2+、La3+掺杂的纳米Y2O3∶Eu3+荧光粉。通过正交实验研究掺杂浓度、溶液pH、超声功率、反应时间、干燥温度、煅烧温度等因素对其光致发光(PL)性能的影响,得到制备Ca2+、La3+掺杂纳米Y2O3∶Eu3+的最佳条件。结果表明,超声功率、Eu(NO3)3浓度、尿素体积、氨水浓度、煅烧温度是影响样品PL强度的主要因素。Ca2+、La3+离子单一掺杂效果优于两种元素的复合掺杂,最佳条件下制备的Ca2+、La3+分别掺杂的纳米Y2O3∶Eu3+荧光粉的发光性能均显著优于未掺杂样品。
The nanometer phosphor Y2O3∶Eu^3＋ doped with Ca^2＋,La^3＋ was prepared by ultrasonic and homogeneous precipitation method.The effects of doping concentration,pH,ultrasonic power,reaction time,drying and calcination temperature in the preparation process of photoluminescence（PL） were studied by orthogonal experiments.The optimum preparation conditions of nanometer phosphor Y2O3∶Eu3＋ doped with Ca2＋,La3＋ by ultrasonic were obtained.The results show that the ultrasonic power,Eu（NO3）3 concentration,urea volume,ammonia concentration and calcination temperature are the key factors affecting the PL intensity of samples.The single doping is superior to compound doped of Ca^2＋,La^3＋.Under the optimum preparation condition,the Y2O3∶Eu^3＋ nanometer phosphor doped with Ca^2＋ and La^3＋ respectively own better PL performance than the undoped sample.
出处
《稀土》
EI
CAS
CSCD
北大核心
2008年第5期24-29,共6页
Chinese Rare Earths
基金
国家863计划资助项目(2004AA001520)
关键词
纳米荧光粉
掺杂
超声波
光致发光
nanometer phosphor
doped
ultrasonic
photoluminescence
