A novel green-emitting phosphor Ca10Na(PO4)7:Eu2+ for near ultraviolet white light-emitting diodes

被引：25
|
作者：
Zhao, Jianwen [1 ,2 ]
Wu, Ye [3 ]
Liang, Yujun [1 ,2 ]
Liu, Mingyu [2 ]
Yang, Fan [2 ]
Xia, Zhanggen [2 ]
机构：
[1] China Univ Geosci, Minist Educ, Engn Res Ctr Nanogeomat, Wuhan 430074, Peoples R China
[2] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
[3] Henan Inst Engn, Zhengzhou 451191, Henan, Peoples R China
来源：
OPTICAL MATERIALS | 2013年 / 35卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Luminescence; Phosphor; Phosphate; Near ultraviolet; ENERGY-TRANSFER; LUMINESCENCE;
D O I：
10.1016/j.optmat.2013.04.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel green phosphor Ca10Na(PO4)(7):Eu2+ was synthesized by the solid state reaction. The crystal structure, photoluminescence properties and concentration quenching of the as-prepared Ca10Na(PO4)(7):Eu2+ phosphor were systematically investigated. The phosphors show trigonal structure and the optimal Eu2+ concentration in Ca10Na(PO4)(7):xEu(2+) is 0.075. The phosphors present two broad emission bands from 380 to 710 nm in which the peak profiles actually centered at about 412 and 531 nm under the near ultraviolet excitation of 400 nm. The calculated results indicate that the mechanism for concentration quenching of fluorescence emission of Eu2+ ions in Ca10Na(PO4)(7) phosphor is the dipole-dipole interaction. All the present work suggests that Ca10Na(PO4)(7):Eu2+ phosphor is a potential green-emitting phosphor for near ultraviolet white light-emitting diodes. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：1675 / 1678
页数：4
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