Luminescent properties of Zn2SiO4 : Mn2+ phosphor under UV, VUV and CR excitation
Luminescent properties of Zn2SiO4 : Mn2+ phosphor under UV, VUV and CR excitation
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DOI：
10.1016/j.jlumin.2006.01.352
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发表时间：
2007
影响因子：
3.6
通讯作者：
Yanzhong Hao;Yuhua Wang
中科院分区：
文献类型：
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作者：
Yanzhong Hao;Yuhua Wang
采用传统的固相反应法合成了Zn 2-xSiO4：xMn 2+（0 <x <0.10）绿色荧光粉。研究了它们在紫外、真空紫外和阴极射线下的光致发光。在254nm、147nm和CR激发下，在525nm（Mn2+（4T1 → 6A1））附近观察到最强的发射带，在Mn 2+浓度分别为x = 0.08，0.04，0.02时，Zn2 − xSiO4：xMn2+（0 <x <$0.10）的发射强度最大。结果表明，在紫外激发下，Mn 2+被直接激发;在CR激发下，电子束主要激发基质晶格;在真空紫外激发下，Mn的直接激发和基质晶格上的激发同时存在，Zn2SiO4：Mn 2+中存在着从基质到Mn 2+的有效能量传递过程。
Zn2−xSiO4:xMn2+(0<x⩽0.10) green phosphors were synthesized by traditional solid-state reaction. Their photoluminescence under ultraviolet (UV), vacuum ultraviolet (VUV) and cathodoluminescence were evaluated. The strongest emission band was observed at about 525nm (Mn2+(4T1→6A1)) upon 254nm, 147nm and CR excitation, and the maximum emission intensity of Zn2−xSiO4:xMn2+(0<x⩽0.10) was obtained at the Mn2+concentration of x=0.08, 0.04, 0.02, respectively. The relaxation of excitation energy under the three excitation energies was investigated; the result shows that Mn2+was excited directly under UV excitation; upon CR excitation, the electron beam mainly excited the host lattice; for VUV excitation, Mn's direct excitation and excitation on the host both existed, and an effective energy transfer process could occur from host to Mn2+via exchanging interaction in Zn2SiO4:Mn2+.