Eu2+-activated Ba2Mg(BO3)2 yellow-emitting phosphors for near ultraviolet-based light-emitting diodes

被引：39

作者：

Zhang, Xinguo ^{[1
]}

Fei, Lianghao ^{[1
]}

Shi, Jianxin ^{[1
]}

Gong, Manglian ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Minist Educ,Lab Bioinorgan & Synth Chem, Guangzhou 510275, Guangdong, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 13期

关键词：

Ba2Mg(BO3)(2):Eu2+; Phosphor; Optical properties; LEDs; EU2+ LUMINESCENCE; RED;

D O I：

10.1016/j.physb.2011.03.077

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A series of Eu2+-activated Ba2Mg(BO3)(2) yellow phosphors were prepared by a high temperature solid-state reaction. The phosphor emits intense yellow light under near ultraviolet excitation. Large Stokes shift can be attributed to the asymmetric nature of the Eu site and the lack of rigidity in the host. The concentration self-quenching mechanism of Ba2Mg(BO3)(2):Eu2+ is d-d interaction and the critical transfer distance is calculated to be about 12.29 angstrom. Prototype light-emitting diodes were fabricated by coating the Ba2Mg(BO3)(2):0.07Eu(2+) phosphor onto similar to 370 nm-emitting InGaN chips. The LEDs exhibit intense yellow-emitting under a forward bias of 20 mA. The results indicate that Eu2+-activated Ba2Mg(BO3)(2) is a candidate as a yellow component for fabrication of near-UV white light-emitting diodes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2616 / 2620

页数：5

共 26 条

[1] STRUCTURE AND EU2+ LUMINESCENCE OF DIBARIUM MAGNESIUM ORTHOBORATE [J].

AKELLA, A ;

KESZLER, DA .

MATERIALS RESEARCH BULLETIN, 1995, 30 (01) :105-111

[2] LUMINESCENCE OF INORGANIC SOLIDS - FROM ISOLATED CENTERS TO CONCENTRATED SYSTEMS [J].

BLASSE, G .

PROGRESS IN SOLID STATE CHEMISTRY, 1988, 18 (02) :79-171

[3] ENERGY TRANSFER IN OXIDIC PHOSPHORS [J].

BLASSE, G .

PHYSICS LETTERS A, 1968, A 28 (06) :444-&

[4]

Blasse G., 1994, LUMINESCENT MAT, P1, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1, 10.1007/978-3-642-79017-11, DOI 10.1007/978-3-642-79017-11]

[5]

Craford M.G., 1996, COMMERCIAL LIGHT EMI

[6] A THEORY OF SENSITIZED LUMINESCENCE IN SOLIDS [J].