Title of article :
Spectroscopic characteristics of Olgite (Ba,Sr)(Na,Sr)2Na[PO4]2 crystals doped with Sm2+ ions
Author/Authors :
Yanlin Huang، نويسنده , , Weifang Kai، نويسنده , , Ho Sueb Lee، نويسنده , , Eunjin Cho، نويسنده , , Kiwan Jang، نويسنده , , Yonggang Cao، نويسنده , , Wanxue Zhao، نويسنده , , Haiyan Ding، نويسنده , , Xigang Wang، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2008
Abstract :
Sm3+ ions doped Olgite crystals (Ba,Sr)(Na,Sr)2Na[PO4]2 were prepared by high temperature solid-state reaction. Sm2+ ions were obtained by X-ray irradiation reduction. The samples were investigated by X-ray diffraction, SEM, photoluminescence and decay curves measurements. In (Ba,Sr)(Na,Sr)2Na[PO4]2, the influence of different mole ratios of Sr to Ba atoms on the crystal structure, reducing efficiencies of Sm3+ to Sm2+ and luminescence properties of Sm2+ ions were discussed. It is found that the conversion of Sm3+ → Sm2+ after X-ray irradiation is efficient in this phosphate. The emission of Sm2+ in this host after excitation into the 4f5 5d1 levels shows 5D0 → 7FJ (J = 0, 1, 2) emission together with a broad emission band. The characteristic of Sm2+ ions luminescence was discussed.
Keywords :
Optical materials and properties , Phosphors , Sm2+ ions , Reduction
Journal title :
Materials Chemistry and Physics
Journal title :
Materials Chemistry and Physics
