Ca9La(PO4)5(SiO4)Cl2:Dy3+ : A white-emitting apatite-type phosphor pumped for n-UV w-LEDs

被引：46
作者：
Liu, Haikun [1 ]
Liao, Libing [1 ]
Guo, Qingfeng [1 ]
Yang, Dan [1 ]
Mei, Lefu [1 ]
机构：
[1] China Univ Geosci, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Beijing 100083, Peoples R China
来源：
JOURNAL OF LUMINESCENCE | 2017年 / 181卷
基金：
中国国家自然科学基金;
关键词：
Phosphor; Solid state; Luminescence properties; Rare earth ions; ENERGY-TRANSFER; LUMINESCENT PROPERTIES; LIGHT EMISSION; PHOTOLUMINESCENCE; CE3+;
D O I：
10.1016/j.jlumin.2016.09.060
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The Ca9La(PO4)(5)(SiO4)Cl-2:Dy3+ (CLPSCI:Dy3+) powder phosphor with apatite structure has been successfully synthesized via high -temperature solid state method. Single phase in such phosphor was verified through X-ray diffraction (XRD) technique. The Dy ions concentration dependent luminescence properties including emission, excitation and lifetimes of Dy ions were characterized using photoluminescence (PL) spectroscopy. The results showed that CLPSCI:Dy3+ phosphor could efficiently assimilate the n-UV light and emit blue (similar to 486 nm) and yellow light (similar to 578 nm), originating from the f-f transitions of Dy3+. The critical Dy3+ quenching concentration (QC) was determined to be about 12 mol%. The concentration quenching mechanism was also determined to be dipole-dipole interaction. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：407 / 410
页数：4
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