Promising Red Phosphors ( Ca , Eu , M ) ( WO4 ) 1 − z ( MoO4 ) z ( M = Mg , Zn ) for Solid-State Lighting
Promising Red Phosphors ( Ca , Eu , M ) ( WO4 ) 1 − z ( MoO4 ) z ( M = Mg , Zn ) for Solid-State Lighting
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DOI：
10.1149/1.2919900
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发表时间：
2008-07
影响因子：
3.9
通讯作者：
Shikao Shi;Jingxia Gao;Ji Zhou
中科院分区：
文献类型：
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作者：
Shikao Shi;Jingxia Gao;Ji Zhou
采用高温固相法合成了含有Ca1′xyEuxMyWO41′zMoO4z和Ca1′1.5′xyEuxMyWO41′zMoO4z的红色荧光粉体系，x = 0.24, y = 0.06, z = 0-1, M = Mg, Zn，并报道了它们的发光性能。所有的荧光体在近紫外光395 nm下被有效激发，并且在616 nm左右表现出优于商用红色荧光粉Y2O2S: eu3 +的红光发射。发射和激发强度随Mo含量z值的增加而增加，并在z = 1时达到最大值。特别是Ca1′1.5xyEuxMyWO41′zMoO4z荧光粉体系，其电荷通过2个Eu 3+取代3个ca2 +离子得到有效补偿，与Ca1′xyEuxMyWO41′zMoO4z荧光粉体系相比，其红光发射增强。的
The red phosphor systems containing Ca1�xyEuxMyWO41�zMoO4z as well as Ca1�1.5xyEuxMyWO41�zMoO4z x = 0.24, y = 0.06, z = 0-1, M = Mg, Zn, were synthesized through solid-state reactions at high temperature, and their lumi- nescent properties were reported. All of the phosphors were effectively excited by near-UV 395 nm light, and showed superior red emissions around 616 nm to the commercial red phosphor Y2O2S:Eu 3+ . Both the emission and excitation intensity were found to increase with increasing Mo content z value, and reached a maximum when z = 1. In particular, the Ca1�1.5xyEuxMyWO41�zMoO4z phosphor system, in which the charge was efficiently compensated via two Eu 3+ substituting for three Ca 2+ ions, exhibited enhanced red-light emissions as compared with that of the Ca1�xyEuxMyWO41�zMoO4z system. The