稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2004年
1期
87-90
,共4页
沈伟英%林君%于敏%韩秀梅
瀋偉英%林君%于敏%韓秀梅
침위영%림군%우민%한수매
optics%solid state chemistry%luminescence%citrate-gel process%α-Zn3(PO4)2%EuPO4%rare earths
By using inorganic salts as raw materials and citric acid as complexing agent, α-Zn3(PO4)2 and Eu3+ doped α-Zn3(PO4)2 phosphor powders were prepared by a citrate-gel process. X-ray diffraction(XRD), TG-DTA, FT-IR and luminescence excitation and emission spectra were used to characterize the resulting products. The results of XRD reveal that the powders begin to crystallize at 500 ℃ and pure α-Zn3(PO4)2 phase is obtained at 800 ℃. And the results of XRD reveal that Eu3+ exists as EuPO4 in the powder. In the phosphor powders, the Eu3+ shows its characteristic red-orange(592 nm, 5D0-7F1) emission and has no quenching concentration.
