Combustion Synthesis and Luminescent Properties of Nano and Submicrometer-Size Gd2O3:Dy3+ Phosphors for White LEDs

被引：25

作者：

Jayasimhadri, Mula ^{[1
]}

Ratnam, Bonam V. ^{[1
]}

Jang, Kiwan ^{[1
]}

Lee, Ho Sueb ^{[1
]}

Chen, Baojiu ^{[2
]}

Yi, Soung-Soo ^{[3
]}

Jeong, Jung-Hyun ^{[4
]}

Moorthy, L. Rama ^{[5
]}

机构：

[1] Changwon Natl Univ, Dept Phys, Chang Won 641773, South Korea

[2] Dalian Maritime Univ, Dept Phys, Dalian 116026, Peoples R China

[3] Silla Univ, Dept Photon, Pusan, South Korea

[4] Pukyong Natl Univ, Dept Phys, Pusan, South Korea

[5] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2011年 / 8卷 / 04期

关键词：

GAS-PHASE; NANOPARTICLES; NANOCRYSTALS; NANOPHOSPHORS; Y2O3-EU3+; GROWTH; GLASS;

D O I：

10.1111/j.1744-7402.2010.02499.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Monoclinic phase Dy3+:Gd2O3 nanophosphors were synthesized by a combustion method using glycine followed by sintering to obtain submicrometer-size phosphors. The X-ray diffraction patterns confirmed the monoclinic structure of Gd2O3:Dy3+ phosphors. The phosphors were characterized by a transmission electron microscope, Raman, Fourier transform infrared, and fluoresence spectroscopy. The sizes of the phosphor particles are in the range from nearly 35 to 93 nm. It was observed that the emission intensities are varied with the excitation wavelength and concentration. The mechanism responsible for concentration quenching was discussed. The enhancement of emission intensities was observed while increasing the sintering temperature of the phosphor. Moreover, the CIE chromaticity coordinates of Dy3+-doped Gd2O3 phosphors fall in the white light domain of the chromaticity diagram. The above characteristics indicate that these phosphors may be potential candidates for the application of near-ultraviolet-based white-light-emitting diodes.

引用

页码：709 / 717

页数：9

共 37 条

[1] Rare-earth doped gadolinia based phosphors for potential multicolor and white light emitting deep UV LEDs [J].

Bedekar, Vinila ;

Dutta, Dimple P. ;

Mohapatra, M. ;

Godbole, S. V. ;

Ghildiyal, R. ;

Tyagi, A. K. .

NANOTECHNOLOGY, 2009, 20 (12)

[2] Optical spectroscopy of CaMoO4:Dy3+ single crystals [J].

Cavalli, E ;

Bovero, E ;

Belletti, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (20) :5221-5228

[3] Nano-sized PDP phosphors prepared by solution combustion method [J].

Chen, Zhe ;

Yan, Youwei .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (17) :5793-5796

[4] Spectroscopic properties and thermal stability of Er3+-doped germanotellurite classes for broadband fiber amplifiers [J].

Feng, X ;

Tanabe, S ;

Hanada, T .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (01) :165-171

[5] Optical characterization of Eu-doped and undoped Gd2O3 nanoparticles synthesized by the hydrogen flame pyrolysis method [J].

Goldys, Ewa M. ;

Drozdowicz-Tomsia, Krystyna ;

Sun Jinjun ;

Dosev, Dosi ;

Kennedy, Ian M. ;

Yatsunenko, Sergiey ;

Godlewski, Marek .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (45) :14498-14505

[6] Long-lifetime luminescence of lanthanide-doped gadolinium oxide nanoparticles for immunoassays [J].

Gordon, WO ;

Carter, JA ;

Tissue, BM .

JOURNAL OF LUMINESCENCE, 2004, 108 (1-4) :339-342

[7]

Graeve OA, 2006, J AM CERAM SOC, V89, P926, DOI 10.1111/j.1551-2916.2005.00845.x

[8] Synthesis and modification of red oxide phosphors for low voltage excitation [J].

Gwak, JH ;

Park, SH ;

Jang, JE ;

Lee, SJ ;

Jung, JE ;

Kim, JM ;

Jin, YW ;

Lee, NS ;

Yi, WK ;

Vorobyov, VA .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2000, 18 (02) :1101-1105

[9]

Hase T., 1990, ADV ELECT ELECT PHYS, V79, P271, DOI DOI 10.1016/S0065-2539(08)60600-9

[10] Synthesis and characterization of Eu:Y2O3 nanoparticles [J].

Huang, H ;

Xu, GQ ;

Chin, WS ;

Gan, LM ;

Chew, CH .

NANOTECHNOLOGY, 2002, 13 (03) :318-323

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