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BaMoO4:Eu3+, 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BaMoO4:Eu3+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Eu3+掺杂量(mol分数)为8%。BaMoO4:Eu3+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5D0→7F2为主导地位的红光发射。
Luminescent lanthanide materials BaMoO4:Eu3+ powders were prepared by chemical precipitation method using ammonium molybdate, barium nitrate and europium oxide as raw materials. Different BaMoO4:Eu3+ powders were prepared by controlling the pH value of solution, changing the sintering temperature and the doping concentration of Eu3+. The BaMoO4:Eu3+ powders were characterized by X-ray diffraction (XRD) and excitation-emission spectra. Experimental results show that a single phase of BaMoO4:Eu3+ can be obtained at solution pH~6, sintering temperature 1000℃ and 8% Eu3+ dopped concentration. The BaMoO4:Eu3+ 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).
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