摘要
采用微波辅助液相沉淀法制备了Ca_(1-x)Mo O_4:Eu^(3+)_x(0.05≤x≤0.09)系列红色荧光粉.通过荧光光谱仪、SEM、XRD测试和表征了该荧光粉的荧光性能、形貌、结构.结果表明,当Eu^(3+)掺杂量为0.07,烧结温度为900℃,保温时间为3 h时,可获得性能最佳的荧光粉,在395 nm和465 nm波长激发下,在616 nm处出现了很强的发射峰,对应于Eu^(3+)的~5D_0→~7F_2的跃迁.采用微波辅助液相沉淀法制备的荧光粉发光强度高于高温固相法所制备的荧光粉,适合白光LED用红色荧光粉.
Abstract： Ca1-xMO4： Eu^3＋（0.05≤x≤0.09） phosphors were synthesized by microwave homogeneous method. The luminescence spectra structure and morphology of samples were investigated by fluorescence speetrophotometer, XRD, SEM and EDS. Under the conditions of calcination temperature 900 ℃ and holding time of 3 h, Eu^3＋ doped amount of 0.07, the best performance of the phosphors can be obtained. The results show the main emission peak is located at 616 nm under the UV excitation of 395 nm and 465 nm, which is due to ^5D0→^7F2 transitions of Eu^3＋. The phosphor emission intensity of microwave-assisted preparation is stronger than the high temperature solid phosphor prepared, which is suitable for the UV- pumped white LED as red phosphor.
出处
《有色金属科学与工程》
CAS
2016年第1期15-19,共5页
Nonferrous Metals Science and Engineering
基金
国家自然科学基金资助项目(51564022)
作者简介
通信作者：曾青云（1957-），男，教授，主要从事铜、稀土、钨冶金新技术研究，E-mail：zengqy3906@qq．com．
