摘要
The Eu^(3+)-doped Na^(24)As_(2)W_(22)O_(83)phosphor has been prepared by solidstare reaction from Na_(3)AsO_(4).12H_(2)O,Na_(2)WO_(4).2H_(2)O and WO_(3),and characterized by elementalanalysis,infrared spectroscopy and powder X-ray diffractometry.According to the measurements withX-ray diffraction,this material belongs to orthorhombic system with its lattice constants:avelence 1.4750 nm,b velence 1.1944 nm,c velence 1.1062 nm,it is consistent with space groupD_(2)^(4)-P2_(1)2_(1)2_(1)(No.19).The emission and excitation spectra were measured.The luminescentproperties of Eu^(3+)-doped Na^(24)As_(2)W_(22)O_(83)and mechanism of energy transfer were discussed.
基金
This project is financially supported by the National Natural Science Foundation of China(No.29971024)
the Natural Science Foundation of Hubei Education Committee(No.2002A00008)
