摘要
以钼酸铵、硝酸钡和三氧化二铕为原料,通过化学沉淀法制备稀土掺杂的发红光材料BaMoO_4:Eu^(3+),并用X射线衍射和激发发射光谱对粉体的结构和发光性能进行了表征。结果表明,获得最强发光BaMoO_4:Eu^(3+)粉体的最佳合成条件是:反应溶液的pH值为6、烧结温度为1000℃以及Eu^(3+)掺杂量(mol分数)为8%。BaMoO_4:Eu^(3+)粉可被394 nm的紫外光和465 nm的可见光有效激发,其发射光谱在616 nm处发光强度最大,是以电偶极跃迁~5D_0→~7F_2为主导地位的红光发射。
Luminescent lanthanide materials BaMoO_4：Eu^（3＋） powders were prepared by chemical precipitation method using ammonium molybdate,barium nitrate and europium oxide as raw materials. Different BaMoO_4：Eu^（3＋） powders were prepared by controlling the pH value of solution,changing the sintering temperature and the doping concentration of Eu^（3＋）.The BaMoO_4：Eu^（3＋） powders were characterized by X-ray diffraction（XRD） and excitation-emission spectra.Experimental results show that a single phase of BaMoO_4：Eu^（3＋） can be obtained at solution pH≈6,sintering temperature 1000℃and 8%Eu^（3＋） dopped concentration.The BaMoO_4：Eu^（3＋） powders have considerable luminescent intensity,and their excitations take on a double peak structure which locates at ultraviolet（394 nm） and visible blue light（465 nm）.The emission is a line spectrum and the main peak located at visible red light（616 nm）.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2010年第5期530-534,共5页
Chinese Journal of Materials Research
