不同沉淀剂下掺杂离子的Y2O3：Eu^3＋粉体的光致发光研究

Study on photoluminescence of ions-doped Y2O3：Eu^3＋ powder through different precipitators

不同沉淀剂下采用均相沉淀法制备出掺杂不同金属离子（K^＋，Mg^2＋，Ba^2＋）的Y2O3：Eu^3＋荧光粉。通过XRD、IR、激发与发射等技术研究了材料的结构与发光性能，考察了沉淀剂、掺杂的金属离子种类对Y2O3：Eu^3＋发光材料的结构和发光性能的影响。结果表明：用尿素作沉淀剂制备的发光性能明显强于用草酸作沉淀剂的Y2O3：Eu^3＋荧光粉。其中，在草酸系列中，同时掺杂K^＋离子能显著增强Y2O3：Eu^3＋的发光强度，而掺杂Mg^2＋，Ba^2＋离子则会减弱其发光强度；而在尿素系列里，掺杂离子都会增强样品的发光强度。

Luminescent materials of Y2O3：Eu^3＋ powder with different metal ions-doped （M： K^＋,Mg^2＋,Ba^2＋）were prepared through different precipitators by precipitation method and characterized by XRD,IR and excitation and emission spectra..The influence of structure and luminescence properties of Y2O3：Eu^3＋ nanocrystallites with different co-dopants have been investigated.The result shows that the luminescence properties of Y2O3：Eu^3＋ are well by using urea,and in the oxalic acid series co-doping K^＋ ion can obviously increase the luminescent intensities of Y2O3：Eu^3＋,but co-doping Mg^2＋, Ba^2＋ ions will decrease the luminescent intensities of Y2O3：Eu^3＋; in the urea series, K^＋, Mg^2＋,Ba^2＋ ions all can increase the luminescent intensities.