A novel blue-emitting NaSrPO4:Eu2+ phosphor for near UV based white light-emitting-diodes

被引：37

作者：

Yim, Dong Kyun ^{[1
]}

Song, Hee Jo ^{[1
]}

Cho, In-Sun ^{[3
]}

Kim, Ju Seong ^{[1
]}

Hong, Kug Sun ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, WCU Hybrid Mat Program, Dept Mat Sci & Engn, Coll Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Res Inst Adv Mat, Seoul 151744, South Korea

[3] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 11期

关键词：

Phosphors; Luminescence; NaSrPO4; LED;

D O I：

10.1016/j.matlet.2011.03.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel blue-emitting phosphor based on a phosphate host matrix, NaSrPO4:Eu2+, was prepared by a conventional solid-state reaction method. The NaSrPO4:Eu2+ phosphor was efficiently excited at wavelengths of 250-450 nm, which is suitable for the emission band of near ultraviolet (n-UV) light-emitting-diode (LED) chips (350-430 nm). The NaSrPO4:Eu2+ phosphor exhibits a strong blue emission peaking at 453 nm and broadly weak green and red emission bands up to 700 nm. The effect of the activated Eu2+ concentration on the emission intensity of the NaSrPO4:Eu2+ was also investigated. Here, a phosphor-converted LED (pc-LED) was fabricated and exhibits bright blue emission under a forward bias of 20 mA. All of these characteristics suggest that the NaSrPO4:Eu2+ phosphors could be applicable to n-UV based white LEDs. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1666 / 1668

页数：3

共 11 条

[1]

[Anonymous], APPL PHYS LETT

[2] ENERGY-TRANSFER BETWEEN INEQUIVALENT EU-2+ IONS [J].

BLASSE, G .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 62 (02) :207-211

[3] Blue-green light-emitting diodes and violet laser diodes [J].

Nakamura, S .

MRS BULLETIN, 1997, 22 (02) :29-35

[4]

Nakamura S., 1997, BLUE LASER DIODE GAN

[5] Optical properties of Eu2+-activated orthosilicates and orthophosphates [J].

Poort, SHM ;

Janssen, W ;

Blasse, G .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 260 (1-2) :93-97

[6] White light with UV LEDs [J].

Radkov, E ;

Bompiedi, R ;

Srivastava, AM ;

Setlur, AA ;

Becker, C .

THIRD INTERNATIONAL CONFERENCE ON SOLID STATE LIGHTING, 2004, 5187 :171-177

[7] Eu2+-Mn2+ phosphor saturation in 5 mm light emitting diode camps [J].

Setlur, A. A. ;

Shiang, J. J. ;

Happek, U. .

APPLIED PHYSICS LETTERS, 2008, 92 (08)

[8] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[9] A novel blue-emitting phosphor LiSrPO4:: EU2+ for white LEDs [J].

Wu, Z. C. ;

Shi, J. X. ;

Wang, J. ;

Gong, M. L. ;

Su, Q. .

JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (08) :2356-2360

[10] Structural and optical properties of YAG:Ce3+ phosphors by sol-gel combustion method [J].

Xia, GD ;

Zhou, SM ;

Zhang, JJ ;

Xu, J .

JOURNAL OF CRYSTAL GROWTH, 2005, 279 (3-4) :357-362

← 1 2 →