稀土荧光粉 Na0.5Gd 0.5WO4:RE3+ 和 Na 0.5Gd 0.5(Mo0.75W0.25)O4:RE3+（RE=Eu、Sm、Dy）的光致发光。
Photoluminescence of rare earth phosphors Na0.5Gd 0.5WO4: RE3+ and Na 0.5Gd 0.5(Mo0.75W0.25)O4: RE3+ (RE=Eu, Sm, Dy).
机构信息
Department of Chemistry, Tongji University, Shanghai, People's Republic of China.
出版信息
J Fluoresc. 2011 Jan;21(1):203-11. doi: 10.1007/s10895-010-0706-1. Epub 2010 Jul 30.
Two series of phosphors, Na(0.5)Gd(0.5)WO(4): RE(3+) and Na(0.5)Gd(0.5)(Mo(0.75)W(0.25))O(4): RE(3+) (RE = Eu, Sm, Dy) have been synthesized by hydrothermal process to obtain the high purity, which have been characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM). The results suggest that Na(0.5)Gd(0.5)(Mo(0.75)W(0.25))O(4): RE(3+) phosphors are more easily to crystallize than Na(0.5)Gd(0.5)WO(4): RE(3+) ones. Both of them present the characteristic luminescence of Eu(3+), Sm(3+) and Dy(3+). Especially the photoluminescent properties of Na(0.5)Gd(0.5)WO(4): x%Eu(3+) (Sm(3+)) can be obtained to show white luminescence as the suitable doping concentration of Eu(3+) or Sm(3+).
已经通过水热法合成了两个系列的荧光粉，Na(0.5)Gd(0.5)WO(4): RE(3+) 和 Na(0.5)Gd(0.5)(Mo(0.75)W(0.25))O(4): RE(3+)（RE = Eu、Sm、Dy），以获得高纯度的荧光粉，并用 X 射线粉末衍射（XRD）和扫描电子显微镜（SEM）对其进行了表征。结果表明，Na(0.5)Gd(0.5)(Mo(0.75)W(0.25))O(4): RE(3+) 荧光粉比 Na(0.5)Gd(0.5)WO(4): RE(3+) 荧光粉更容易结晶。它们都呈现出 Eu(3+)、Sm(3+)和 Dy(3+)的特征发光。特别是 Na(0.5)Gd(0.5)WO(4): x%Eu(3+)（Sm(3+)) 的光致发光性能可以通过适当的 Eu(3+)或 Sm(3+)掺杂浓度来获得白色发光。
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