白光荧光粉Ba_(1.3)Ca_(0.7-y-z)(Al_xSi_(1-x))O_4:yEu^(2+),zMn^(2+)发光性能研究  

Luminescent Properties of White Light Phosphors Ba_(1.3)Ca_(0.7-y-z)(Al_xSi_(1-x))O_4:yEu^(2+),zMn^(2+)

作　　者：陈琳[1] 陈永杰[1] 吴胜男[1] 杨英[1] 耿秀娟[1] 

机构地区：[1]沈阳化工大学辽宁省稀土化学及应用重点实验室,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2015年第4期289-292,310,共5页Journal of Shenyang University of Chemical Technology

基　　金：辽宁省自然科学基金项目(LS201102174)

摘　　要：采用高温固相反应在还原气氛中合成Ba_(1.3)Ca_(0.7-y-z)(Al_xSi_(1-x))O_4:yEu^(2+),zMn^(2+)白光荧光粉.研究硅铝摩尔比变化对荧光粉晶体结构和光谱性能的影响.XRD结果表明:改变硅铝摩尔比对荧光粉晶体结构基本无影响,晶相结构为Ba_(1.3)Ca_(0.7)SiO_4;荧光光谱显示在277 nm紫外光激发下,Eu^(2+),Mn^(2+)共掺杂的荧光粉的发射光谱覆盖425~550 nm蓝绿光波带和550~650 nm橙红光波带,最大发射峰位于454、593 nm,这两个发射宽带组合形成白光.The white light phosphor Ba1.3Ca0.7（AlxSi1-x）O4：Eu2＋,Mn2＋ were synthesized by high-tem-perature solid-state reaction under the reducing atmosphere. The effect of silicon/aluminum ratio（ the mo-lar ratio ） changing on crystal structure and spectral properties of the phosphors were investigated. The XRD result indicates that there is no influence on the crystal structure of sample when we change the sili-con/aluminum ratio,the crystal structure is Ba1. 3 Ca0. 7 SiO4 . The luminescence spectrum shows,under the UV light excitation at 277 nm,the emission spectrum of Eu2＋-Mn2＋ co-doped phosphor covers the blue-green wave band of 420～550 nm and orange-red wave band of 550～650 nm,and the maximum emission peaks are at 454 and 593 nm,and two emitting bands can be combined into a white light.

关 键 词：发光二级管 白色荧光粉 高温固相反应 Ba1.3Ca0.7(AlxSi1-x)O4 

分 类 号：TQ422[化学工程] TQ630.6