Citrate-Gel Synthesis and Luminescent Properties of α-Zn_3(PO_4)_2 Doped with Eu^(3+)  

作　　者：沈伟英 林君 于敏 韩秀梅 

机构地区：[1]Key Laboratory of Rare Earth Chemistry and Physics

出　　处：《Journal of Rare Earths》2004年第1期87-90,共4页稀土学报（英文版）

基　　金：Projectsupportedbythe"BairenJihua"ofChineseAcademyofSciencesandNationalNaturalScienceFoundationofChina( 2 0 2 710 48)andtheMOSTofChina ( 2 0 0 3CB3 14 70 7)

摘　　要：By using inorganic salts as raw materials and citric acid as complexing agent, α-Zn 3(PO 4) 2 and Eu 3+ doped α-Zn 3(PO 4) 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-Zn 3(PO 4) 2 phase is obtained at 800 ℃. And the results of XRD reveal that Eu 3+ exists as EuPO 4 in the powder. In the phosphor powders, the Eu 3+ shows its characteristic red-orange (592 nm, 5D 0- 7F 1) emission and has no quenching concentration.By using inorganic salts as raw materials and citric acid as complexing agent, α-Zn 3(PO 4) 2 and Eu 3+ doped α-Zn 3(PO 4) 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-Zn 3(PO 4) 2 phase is obtained at 800 ℃. And the results of XRD reveal that Eu 3+ exists as EuPO 4 in the powder. In the phosphor powders, the Eu 3+ shows its characteristic red-orange (592 nm, 5D 0- 7F 1) emission and has no quenching concentration.

关 键 词：optics solid state chemistry LUMINESCENCE citrate-gel process α-Zn 3(PO 4)  2 EuPO  4 rare earths 

分 类 号：O482.3[理学—固体物理]