Hydrothermal synthesis and photoluminescence of SrWO4:Tb3+ novel green phosphor
Hydrothermal synthesis and photoluminescence of SrWO4:Tb3+ novel green phosphor
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DOI：
10.1016/j.materresbull.2009.05.013
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发表时间：
2009-09
影响因子：
5.4
通讯作者：
J. Liao;B. Qiu;H. Wen;Jinglin Chen;W. You
中科院分区：
文献类型：
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作者：
J. Liao;B. Qiu;H. Wen;Jinglin Chen;W. You
采用水热反应法制备了具有白钨矿结构的Tb3+掺杂srwo4荧光粉。利用x射线粉末衍射、场发射扫描电镜、光致发光激发发射光谱和衰减曲线对所得样品进行表征。扫描电镜结果表明，制备的SrWO4:Tb3+荧光粉呈近球形，尺寸在1 ~ 3μm之间。光致发光光谱表明，在紫外光激发下，荧光粉发出以545nm为中心的强绿光。因为12。与商用绿色荧光灯荧光粉（LaPO4:Ce,Tb）相比，% sw4:Tb3+荧光粉在254nm激发下表现出强烈的绿色发光，其优异的发光性能使其成为一种有前景的新型荧光灯绿色荧光粉。
Tb3+-doped SrWO4phosphors with a scheelite structure have been prepared by hydrothermal reaction. X-ray powder diffraction, field-emission scanning electron microscopy, photoluminescence excitation and emission spectra and decay curve were used to characterize the resulting samples. Scanning electron microscopy image showed that the obtained SrWO4:Tb3+phosphors appeared to be nearly spherical and their sizes ranged from 1 to 3μm. Photoluminescence spectra indicated the phosphors emitted strong green light centered at 545nm under ultraviolet light excitation. Because 12at.% SWO4:Tb3+phosphor exhibits intensive green emission under 254nm excitation in comparison with the commercial green fluorescent lamp phosphor (LaPO4:Ce,Tb), the excellent luminescence properties make it a new promising green phosphor for fluorescent lamps application.