Synthesis and photoluminescence properties of Yb2+ doped Ba5(PO4)3Cl phosphor for white light-emitting diodes

被引：35

作者：

Yoo, Hyoung Sun ^{[1
]}

Vaidyanathan, Sivakumar ^{[1
]}

Kim, Sung Wook ^{[1
]}

Jeon, Duk Young ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

来源：

OPTICAL MATERIALS | 2009年 / 31卷 / 11期

关键词：

Yb2+; Phosphor; Photoluminescence; White LEDs; ENERGY TRANSFER; LUMINESCENCE; EMISSION; HOST;

D O I：

10.1016/j.optmat.2009.02.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Yb2+ ion doped Ba-5(PO4)(3)Cl phosphor was synthesized by solid state reaction. Four distinct absorption bands were observed in the Ultraviolet (UV) light region due to the electronic transitions of Yb2+ ion from S-1(0) ground state to F-2(5/2)(t(2g)), F-2(5/2)(e(g)), F-2(7/2)(t(2g)), and F-2(7/2)(e(g)) excited states. The main emission wave-length of the phosphor was around 630 nm. The optimized Yb2+ ion concentration was 0.2 mol% (lambda(exc.) = 400 nm). The calculated critical distance was about 8.729 angstrom and the concentration quenching was observed above 0.2 mol% due to the electric dipole-dipole interaction. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1555 / 1558

页数：4

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