Warm white light generation from a single phased phosphor Sr10[(PO4)5.5(BO4)0.5](BO2):Eu2+, Mn2+, Tb3+ for light emitting diodes

被引：56
|
作者：
Zhu, Ge [1 ]
Xin, Shuangyu [1 ]
Wen, Yan [1 ]
Wang, Qian [1 ]
Que, Meidan [1 ]
Wang, Yuhua [1 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China
来源：
RSC ADVANCES | 2013年 / 3卷 / 24期
基金：
美国国家科学基金会;
关键词：
ENERGY-TRANSFER; LUMINESCENT PROPERTIES; CE3+; PHOTOLUMINESCENT; EMISSION; EU2+; PARTICLES;
D O I：
10.1039/c3ra00040k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel single phased white light emitting phosphor Sr-10[(PO4)(5.5)(BO4)(0.5)](BO2):Eu2+, Mn2+, Tb3+ was synthesized by solid-state reaction for the first time. The crystal structure, photoluminescence properties and the efficient energy transfer from different Eu2+ sites to Mn2+ and Tb3+ in Sr-10[(PO4)(5.5)(BO4)(0.5)](BO2) is studied in detail by X-ray diffractometry Rietveld method, luminescence spectra, energy-transfer efficiency and lifetimes. Through effective energy transfer, the wavelength-tunable warm white light can be realized with superior chromaticity coordinates of (0.37, 0.30) and low correlated color temperature (CCT = 3512 K) by coupling the emission bands peaking at 410, 542 and 649 nm attributed to the contribution from Eu2+, Tb3+ and Mn2+, respectively. The results indicate the white phosphor Sr-10[(PO4)(5.5)(BO4)(0.5)](BO2):Eu2+, Mn2+, Tb3+ can serve as a promising material for phosphor-converted warm white LEDs.
引用
收藏
页码：9311 / 9318
页数：8
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