摘要
采用高温固相法合成YAG:Ce^3+黄色荧光粉材料,用正交分析法研究了煅烧时间、煅烧温度和Ce^3+浓度对荧光粉发光强度的影响。在煅烧温度为1600℃,Ce^3+浓度为0.12mol,煅烧时间为4h的条件下,得到的荧光粉发光性能最佳。硼酸作为助熔剂,当其浓度含量为1.2wt%,荧光粉的发光强度增大约40%。YAG:Ce^3+荧光粉的激发峰呈现双峰特征,其中最大激发峰位于467nm;最大发射峰位于529nm处,因此,YAG:Ce^3+黄色荧光粉可以与蓝光GaN芯片匹配制备双基色LED。
YAG:Ce^3+yellow phosphors were prepared by the high-temperature solid-state method.The influence of sintering time,sintering temperature and Ce^3+content on the luminescence intensity of phosphor was determined by the orthogonal analysis method.When the calcination temperature was 1600℃,the concentration of Ce^3+was 0.12 mol and the calcination time was 4 h,the luminous properties of the phosphor obtained were the best.The influence of boric acid as a flux on luminous intensity of phosphors was studied.The phosphor luminescence intensity was increased by about 40%at the concentration of H 3 BO3 of 1.2wt%.Two obvious absorption peaks can be observed and the maximum excitation wavelength at 467 nm,the maximum emission peak was located at 529 nm.Therefore,YAG:Ce^3+yellow phosphor can be matched with blue GaN chip to prepare double basic color LED.
作者
冯颖
童义平
解芳
廖芳丽
FENG Ying;TONG Yi-ping;XIE Fang;LIAO Fang-li(Department of Chemical Engineering,Huizhou University,Guangdong Huizhou 516007,China)
出处
《广州化工》
CAS
2019年第10期69-71,84,共4页
GuangZhou Chemical Industry
基金
广东省惠州市科技计划项目(No:20110210)
广东省产学研结合项目(No:2012B091100200)
国家自然科学基金项目(No:21271080)
广东省教育厅学科建设专项项目(No:GCZX-B1303)
