Crystal structure, thermally stability and photoluminescence properties of novel Sr10(PO4)6O:Eu2+ phosphors

被引：20
|
作者：
Guo, Qingfeng [1 ]
Liao, Libing [1 ]
Mei, Lefu [1 ]
Liu, Haikun [1 ]
机构：
[1] China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 226卷
关键词：
Apatite; Phosphor; Structure; ENERGY-TRANSFER PROPERTIES; LUMINESCENCE; EMISSION; COLOR; EU-2+; EU2+;
D O I：
10.1016/j.jssc.2015.02.010
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of novel luminescent phosphors Sr-10(PO4)(6)O:Eu2+ with apatite structure were synthesized via a high temperature solid-state reaction. The phase structure, photoluminescence (PL) properties, the PL thermal stability, as well as the fluorescence decay curves of the samples were investigated to characterize the resulting samples, and the selected Sr-9.97(PO4)(6)O:0.03Eu(2+) phosphor exhibits strong thermal quenching resistance, retaining the luminance of 88.73% at 150 degrees C. The quenching concentration of Eu2+ in Sr-10(PO4)(6)O was about 0.03 attributing to the dipole-quadrupole interaction. The Sr-10(PO4)(6)O:Eu2+ phosphor exhibited a broad-band blue emission at 439 nm upon excitation at 346 nm. The results indicate that Sr-10(PO4)(6)O:Eu2+ phosphors have potential applications as near UV-convertible phosphors for white-light UV LEDs. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：107 / 113
页数：7
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