摘要
以稀土氧化物、硝酸铝和硼酸为原料,用高温球磨法制备红色荧光粉YAl_3(BO_3)_4:Eu^(3+),研究其结构、形貌和发光性能。结果表明,在700℃高温球磨制备YAl_3(BO_3)_4:Eu^(3+)荧光粉,煅烧温度比硝酸盐分解法降低200℃,比高温固相法降低500℃;制备出的荧光粉粒度分布均匀,晶粒近似呈球状,尺寸为纳米级;在394 nm的紫外光激发下YAl_3(BO_3)_4:Eu^(3+)荧光粉具有较好的发光性能,发射光以波长为618 nm的红光(Eu^(3+)离子~5D_0→~7F_2跃迁)为主;Eu^(3+)的最佳掺杂量为15%。
The red phosphor yttrium aluminoborate doped with Eu^（3＋） was prepared by high temperature ball milling method.The phosphor was characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and luminescence spectroscopy.The results show that Y^（3＋） ions are replaced by Eu^（3＋） ions in view of their similar sizes and valence state,the Eu^（3＋） ions are non-centrosymmetric sites in YAl_3（BO_3）_4：Eu^（3＋）.The synthesis temperature of high temperature ball milling method is 700℃,which is obviously decreased in contrast to that of nitrate salts decomposition method（900℃） and conventional solid state reaction method（1200℃）.The particles are approximately nanometer-sized with narrow distribution range and spherical morphology.In the emission spectra under 394 nm excitation,the strongest peak at 618 nm is due to the forced electric dipole transition ~5D_0→~7F_2 of Eu^（3＋） ions.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2010年第2期213-216,共4页
Chinese Journal of Materials Research
