Yellow phosphors Ba2Mg(PO4)2: Eu2+ fit for white light-emitting diodes prepared with sol-gel precursor route
Yellow phosphors Ba2Mg(PO4)2: Eu2+ fit for white light-emitting diodes prepared with sol-gel precursor route
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DOI：
10.1016/j.jlumin.2018.10.027
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发表时间：
2019-02-01
影响因子：
3.6
通讯作者：
Zhang, Hongwu
中科院分区：
文献类型：
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作者：
Fu, Xiaoyan;Zheng, Shenghui;Zhang, Hongwu
采用Pechini溶胶-凝胶法制备了粒径分布均匀的Ba 2 Mg（PO 4）（2）：Eu 2+黄/橙光荧光粉。Ba_（2-x）Mg（PO_4）（2）：x Eu（2+）荧光粉的发射光谱在560 nm处有一个宽的发射带，属于Eu ~（2+）的4f（6）5d（1）-> 4f（7）跃迁。沿着增加，当Eu ~（2+）掺杂量为4 mol%时，发光峰强度增加。在Ba_2Mg（PO_4）（2）：Eu ~（2+）荧光粉中，Eu ~（2+）离子通过取代Ba ~（2+）离子占据两个不同的晶格位置。随着Eu ~（2+）掺杂浓度的增加，Eu ~（2+）进入Ba_2Mg（PO_4）（2）第一位的能力增强。
Yellow/orange-emitting Ba2Mg(PO4)(2): Eu2+ phosphors with uniform particle size distribution were successfully prepared by Pechini sol-gel method. The emission spectra of Ba2-xMg(PO4)(2): xEu(2+) phosphor displayed one broad band centered at about 560 nm which can be assigned to the 4f(6)5d(1)-> 4f(7) transitions of the Eu2+. Along with the increasing of the Eu2+ doping amount the emission peak intensity increased till the Eu2+ concentration ratio is 4 mol%. In Ba2Mg(PO4)(2): Eu2+ phosphors, Eu2+ ion occupy two different lattice sites by substitution for Ba2+ ions. with the increase of the doping concentration of Eu2+ ion, the ability for Eu2+ enter into the first site of Ba2Mg(PO4)(2) in the lattice is increasing.