M_xSr_(1–x)Al_2O_4(M=Ca,Zn):Eu^(2+)的微波合成及发光性能  

MICROWAVE SYNTHESIS AND LUMINESCENCE PROPERTIES OF M_xSr_(1–x)Al_2O_4(M=Ca, Zn):Eu^(2+)

作　　者：宋会花[1] 刘文芳[1] 

机构地区：[1]河北师范大学化学与材料科学学院,石家庄050016

出　　处：《硅酸盐学报》2007年第9期1186-1189,共4页Journal of The Chinese Ceramic Society

基　　金：博士基金(103261)资助项目。

摘　　要：用微波法合成了强耐水性SrAl_2O4:Eu^(2+),MxSr1–xAl2O4:Eu2+(M=CaZn)发光粉体。X射线衍射结果表明:所得SrAl2O4为α-SrAl2O4,单斜晶系,晶胞参数a=0.0844nm,b=0.0881nm,c=0.0515nm,β=93.2491°。扫描电子显微镜观察粉体形貌的结果表明:产品微粒直径在300～700nm之间,无需机械研磨可直接应用。在340nm紫外光激发下,SrAl2O4:Eu2+的主发射峰位于513.4nm处,少量钙离子(Ca2+)的掺入引起发射峰红移;少量锌离子(Zn2+)的掺入引起发射峰蓝移。Ca2+在微波场的作用下,增大了在基质中的极限浓度。The SrAl2O4：Eu^2＋ and MxSr1-xAl2O4（M=Ca,Zn）：Eu^2＋（M=Ca Zn） phosphor powder with strong water-persistence were synthesized by the microwave radiation method. X-ray diffraction analysis demonstrate that the structure of SrAl2O4 is α-SrAl2O4; it is a monoclinic system, and the unit cell dimensions are a=0.0844nm, b=0.0881 nm, c=0.0515 nm, and β=93.2491°. The morphology was obtained by a scanning electron microscope （SEM）. The diameter of the product is between 300-700 nm, it can be used directly with-out milling It was excitated by ultraviolet radiation under 340 nm, and the position of the main emission peak was located at 513.4 nm. When doping with a little Ca^2＋, the emission peak is red-shifted; when doping with a little Zn^2＋, the emission peak is blue-shifted. The limit of Ca^2＋ concentration is improved under a microwave field.

关 键 词：铝酸锶 微波合成 发光材料 

分 类 号：TQ422[化学工程]