Synthesis, characterization and photoluminescence properties of Gd2O3:Eu3+ nanophosphors prepared by solution combustion method

被引：32

作者：

Dhananjaya, N. ^{[1
]}

Nagabhushana, H. ^{[2
]}

Nagabhushana, B. M. ^{[3
]}

Chakradhar, R. P. S. ^{[4
]}

Shivakumara, C. ^{[5
]}

Rudraswamy, B. ^{[1
]}

机构：

[1] Bangalore Univ, Dept Phys, Bangalore 560056, Karnataka, India

[2] Tumkur Univ, Univ Coll Sci, Dept PG studies & Res Phys, Tumkur 572103, India

[3] MS Ramaiah Inst Technol, Dept Chem, Bangalore 560054, Karnataka, India

[4] CSIR, Cent Glass & Ceram Res Inst, Glass Technol Lab, Kolkata 700031, India

[5] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 17期

关键词：

Phosphors; Nanomaterials; Chemical synthesis; Scanning electron microscopy; Photoluminescence; PHOSPHOR PARTICLES; OXIDE NANOPARTICLES; LUMINESCENCE; GD2O3-EU3+; INTENSITIES; SIZE; FILM;

D O I：

10.1016/j.physb.2010.06.002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Gd2O3:Eu3+ (0.5-8.0 mol%) nanophosphors have been prepared by low temperature solution combustion method using metal nitrates as oxidizers and oxalyl dihydrazide (ODH) as a fuel. The phosphors are well characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and photoluminescence (PL) techniques. PXRD patterns of as-formed and calcined (800 degrees C, 3 h) Gd2O3 powders exhibit monoclinic phase with mean crystallite sizes ranging from 20 to 50 nm. Eu3+ doping changes the structure from monoclinic to mixed phase of monoclinic and cubic. SEM micrographs shows the products are foamy, agglomerated and fluffy in nature due to the large amount of gases liberated during combustion reaction. Upon 254 nm excitation the photoluminescence of the Gd2O3:Eu3+ particles show red emission at 611 nm corresponding to D-5(0)-> F-7(2) transition. It is observed that PL intensity increases with calcination temperature. This might be attributed to better crystallization and eliminates the defects, which serve as centers of non-radiative relaxation for nanomaterials. It is observed that the optical energy gap (E-g) is widened with increase Eu3+ content. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3795 / 3799

页数：5

共 31 条

[1]

Abeles F., 1970, OPTICAL PROPERTIES S

[2]

Bae JS, 2006, APPL PHYS A-MATER, V82, P369, DOI 10.1007/S00339-005-3442-7

[3] Preparation of YVO4 thin films by metal organic chemical vapor deposition [J].

Bai, GR ;

Zhang, H ;

Foster, CM .

THIN SOLID FILMS, 1998, 325 (1-2) :115-122

[4] Synthesis and properties of europium-based phosphors on the manometer scale:: Eu2O3, Gd2O3:Eu, and Y2O3:Eu [J].

Bazzi, R ;

Flores, MA ;

Louis, C ;

Lebbou, K ;

Zhang, W ;

Dujardin, C ;

Roux, S ;

Mercier, B ;

Ledoux, G ;

Bernstein, E ;

Perriat, P ;

Tillement, O .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 273 (01) :191-197

[5]

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]

[6] Hybrid gadolinium oxide nanoparticles:: Multimodal contrast agents for in vivo imaging [J].

Bridot, Jean-Luc ;

Faure, Anne-Charlotte ;

Laurent, Sophie ;

Riviere, Charlotte ;

Billotey, Claire ;

Hiba, Bassem ;

Janier, Marc ;

Josserand, Veronique ;

Coll, Jean-Luc ;

Vander Elst, Luce ;

Muller, Robert ;

Roux, Stephane ;

Perriat, Pascal ;

Tillement, Olivier .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (16) :5076-5084

[7] The effect of the size of raw Gd(OH)3 precipitation on the crystal structure and PL properties of Gd2O3:Eu [J].

Chen, HY ;

Zhang, JH ;

Wang, XJ ;

Gao, SY ;

Zhang, MZ ;

Ma, YM ;

Dai, QQ ;

Li, DM ;

Kan, SH ;

Zou, GT .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 297 (01) :130-133

[8] SITE-SELECTIVE EXCITATION, CRYSTAL-FIELD ANALYSIS, AND ENERGY-TRANSFER IN EUROPIUM-DOPED MONOCLINIC GADOLINIUM SESQUIOXIDE - A TEST OF THE ELECTROSTATIC MODEL [J].

DEXPERTGHYS, J ;

FAUCHER, M ;

CARO, P .

PHYSICAL REVIEW B, 1981, 23 (02) :607-617

[9] Functionalized europium oxide nanoparticles used as a fluorescent label in an immunoassay for atrazine [J].

Feng, J ;

Shan, GM ;

Maquieira, A ;

Koivunen, ME ;

Guo, B ;

Hammock, BD ;

Kennedy, IM .

ANALYTICAL CHEMISTRY, 2003, 75 (19) :5282-5286

[10] Elaboration and scintillation properties of Eu3+-doped Gd2O3 and Lu2O3 sol-gel films [J].

García-Murillo, A ;

Le Luyer, C ;

Dujardin, C ;

Martin, T ;

Garapon, C ;

Pédrini, C ;

Mugnier, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 486 (1-2) :181-185

← 1 2 3 4 →