作　　者： ; ;

机构地区： 中山大学化学与化学工程学院化学系

出　　处： 《中国稀土学报》 1998年第3期284-287,共4页

摘　　要： 用微波辐射法合成了（Ｃｅ０．６７Ｔｂ０．３３）ＭｇＡｌ１１Ｏ１９（ＰＧ）和ＢａＭｇＡｌ１０Ｏ１７（ＰＢ）两种荧光体，经Ｘ射线粉末衍射分析，其ｄ值和Ｉ／Ｉ０值与ＪＣＰＤＦ３６７３和２６１６３基本一致。计算得到ＰＧ的晶胞参数ａ＝０５５８２ｎｍ，ｃ＝２１８８４ｎｍ；Ｐ－Ｂ的晶胞参数α＝０５６１６ｎｍ，ｃ＝２２６１４ｎｍ。测定了两种荧光体的激发光谱和发射光谱。Ｐ－Ｇ的色坐标ｘ＝０３１６，ｙ＝０５６５；Ｐ－Ｂ的色坐标ｘ＝０１５６，ｙ＝０１０６。与市售同类荧光粉相比，Ｐ－Ｇ的相对发光强度为８８％，Ｐ－Ｂ的相对发光强度为８０％。 The phosphors(Ce 0 67 Tb 0 33 )MgAl 11 O 19 (P G) and BaMgAl 10 O 17 ∶Eu 2+ (P B) were synthesized using the microwave irradiation technique. The data of X ray powder diffraction( d values and I/I 0 values) are basically coincided with the data of JCPDF 36 73 and 26 163 cards. The calculated cell dimensions are a =0 5582 nm, c =2 1884 nm for P G, and a =0 5616 nm, c =2 2614 nm for P B. The excitation spectrum and the emission spectrum of the phosphors were measured. The chromatic coordinates are x =0 316, y =0 565 for P G, and x =0 156, y =0 106 for P B. The relative luminescent intensity is about 88%(P G) and 80%(P B) respectively compared with the same commercial phosphors. The pictures of SEM of the phosphors were also detected.

关 键 词： 稀土三基色灯 绿色 蓝色 发光材料 荧光体 合成

领　　域： [电气工程] [电气工程]