(Zn, Ca) Solid-Solution Behavior and Its Effect on Luminescence Properties in Ca1- xZnx TiO3: 0.002Pr3+ Phosphors
来源期刊：JOURNAL OF RARE EARTHS2005年第6期
论文作者：Wang Minquan Zhang Pengyue Hong Zhanglian
Key words：Ca1 - xZnxTiO3: Pr3 +; solid solution; luminescence; perovskite structure; rare earths;
Abstract: Nominal composition of Ca1 - xZnxTiO3: 0. 002Pr3 + ( x = 0. 000 ～ 0. 200) phosphors were prepared by conventional solid reaction route. XRD and PL measurements were used to investigate the solid-solution structure and luminescence properties of Zn-doped Ca1- xZnxTiO3:0. 002Pr3 + phosphors. The effect of solid-solution structure formed by substitution between Ca2 + and Zn2 + ions on the luminescent properties was analyzed. The results reveal that, with the increase of Zn substitution content below 0.010, lattice parameters and the intensity of excitation peak at both 260 and 330 nm as well as the corresponding 610 nm emission intensity are monotonously decreased quickly in a similar tendency. Also, the evolution of luminescence intensity and crystal cell parameters against Zn doping concentration are in good agreement.Above results are closely related with the structure change within Ca1- xZnxTiO3:0. 002Pr3 + solid-solution phase formed by the Zn ions substitution for the Ca sites. Present study reveals that the solid-solution structure formed by substitution between Ca2 + and Zn2 + ions has significant effect on the luminescence properties of single phase Ca1- xZnxTiO3:0.002Pr3 +phosphors.
Wang Minquan1，Zhang Pengyue1，Hong Zhanglian1
(1.Department of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China;
2.State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China)
Abstract:Nominal composition of Ca1 - xZnxTiO3: 0. 002Pr3 + ( x = 0. 000 ～ 0. 200) phosphors were prepared by conventional solid reaction route. XRD and PL measurements were used to investigate the solid-solution structure and luminescence properties of Zn-doped Ca1- xZnxTiO3:0. 002Pr3 + phosphors. The effect of solid-solution structure formed by substitution between Ca2 + and Zn2 + ions on the luminescent properties was analyzed. The results reveal that, with the increase of Zn substitution content below 0.010, lattice parameters and the intensity of excitation peak at both 260 and 330 nm as well as the corresponding 610 nm emission intensity are monotonously decreased quickly in a similar tendency. Also, the evolution of luminescence intensity and crystal cell parameters against Zn doping concentration are in good agreement.Above results are closely related with the structure change within Ca1- xZnxTiO3:0. 002Pr3 + solid-solution phase formed by the Zn ions substitution for the Ca sites. Present study reveals that the solid-solution structure formed by substitution between Ca2 + and Zn2 + ions has significant effect on the luminescence properties of single phase Ca1- xZnxTiO3:0.002Pr3 +phosphors.
Key words:Ca1 - xZnxTiO3: Pr3 +; solid solution; luminescence; perovskite structure; rare earths;
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