Preparation and characterization of tunable YVO4: Bi3+, Sm3+ phosphors
Preparation and characterization of tunable YVO4: Bi3+, Sm3+ phosphors
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DOI：
10.1016/j.jlumin.2008.10.001
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发表时间：
2009-03-01
影响因子：
3.6
通讯作者：
Lu, Chung-Hsin
中科院分区：
文献类型：
--
作者：
Natarajan, V.;Dhobale, A. R.;Lu, Chung-Hsin
采用固相法和溶胶-凝胶法制备了与Bi3+-和Sm3+离子共掺杂的钒酸钇荧光粉。发光研究表明，所制备的荧光粉可以通过调节激发波长来实现多色发光。Bi3+-和Sm3+共掺杂荧光粉的激发光谱清楚地揭示了Bi3+离子向Sm3+离子的能量转移。当共掺杂荧光粉在254 nm处激发时，Bi3+的发光占主导地位。在365 nm激发时，检测到Bi3+和Sm3+的发射。在410 nm的激发下，Sm3+离子被选择性地激发，产生强烈的红色辐射。结果表明，以最佳Bi3+和Sm3+浓度制备的荧光粉可以在254、365和410 nm处激发，分别产生黄色、橙色和红色的荧光。(C) 2008年Elsevier B.V.出版
Yttrium vanadate phosphors co-doped with Bi3+- and Sm3+ ions have been prepared via the solid-state reaction as well as via the sol-gel method. The luminescence studies demonstrate the potential of the prepared phosphors as multi-color emitters, which can be achieved by adjusting the excitation wavelengths. The excitation spectra of Bi3+- and Sm3+ co-doped phosphors clearly revealed energy transfer from Bi3+ to Sm3+ ions. When the co-doped phosphors were excited at 254 nm, the emission from Bi3+ was dominant. Upon excitation at 365 nm, the emission from both Bi3+ and Sm3+ was detected. With 410 nm excitation, Sm3+ ions were selectively excited to yield intense red emission. It is shown that the prepared phosphors with optimal concentrations of Bi3+ and Sm3+ can be excited at 254, 365 and 410 nm to yield yellow, orange and red emissions, respectively. (C) 2008 Published by Elsevier B.V.