Local structure and time-resolved photoluminescence of emulsion prepared YAG nanoparticles

被引：42

作者：

Furman, J. D. ^{[1
]}

Gundiah, G. ^{[2
]}

Page, K. ^{[3
]}

Pizarro, N. ^{[4
]}

Cheetham, A. K. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Univ Calif Santa Barbara, Mitsubishi Chem Ctr Adv Mat, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA

[4] Univ Andres Bello, Fac Ecol & Recursos Nat, Dept Ciencias Quim, Santiago, Chile

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 465卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2008.09.045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

White LEDs rely on phosphors to convert blue or UV light into the broad spectrum emission needed for illumination. Nanoparticles of the Ce-doped yttrium aluminum garnet (YAG:Ce3+) phosphor were prepared by an emulsion route and calcined at various temperatures. The products were characterized by X-ray diffractometry, electron microscopy, and photoluminescence measurements, as well as time-resolved luminescent measurements at different temperatures (77-473 K). Quantitative Rietveld refinement with decreasing calcination temperatures and pair distribution function analyses, carried out with synchrotron X-ray data, revealed both luminescence quenching impurity phases and reduced long range correlation. (c) 2008 Published by Elsevier B.V. .

引用

页码：67 / 72

页数：6

共 41 条

[1]

[Anonymous], 1997, BLUE LASER DIODE GAN, DOI DOI 10.1007/978-3-662-03462-0

[2] Polyreactions in miniemulsions [J].

Antonietti, M ;

Landfester, K .

PROGRESS IN POLYMER SCIENCE, 2002, 27 (04) :689-757

[3]

BECKER W, 2005, ADV TIME CORRELATED, P37

[4]

BERAR JF, 1992, NIST SPECIAL PUBLICA, V846, P212

[5]

BERTAUT F, 1963, CR HEBD ACAD SCI, V257, P867

[6] INVESTIGATION OF SOME CE3+-ACTIVATED PHOSPHORS [J].

BLASSE, G ;

BRIL, A .

JOURNAL OF CHEMICAL PHYSICS, 1967, 47 (12) :5139-&

[7] THE PREPARATION OF MONODISPERSE COLLOIDAL METAL PARTICLES FROM MICRO-EMULSIONS [J].

BOUTONNET, M ;

KIZLING, J ;

STENIUS, P .

COLLOIDS AND SURFACES, 1982, 5 (03) :209-225

[8] Preparation of Nd:YAG nanopowder in a confined environment [J].

Caponetti, Eugenio ;

Martino, Delia Chillura ;

Saladino, Maria Luisa ;

Leonelli, Cristina .

LANGMUIR, 2007, 23 (07) :3947-3952

[9] Synthesis of yttrium-aluminum-garnet hollow microspheres by reverse-emulsion technique [J].

Chatterjee, M ;

Naskar, MK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (04) :1443-1446

[10] A COMPARISON OF 3 SETS OF DIFFRACTION DATA FOR AL2Y4O9 - X-RAY SYNCHROTRON POWDER DATA, X-RAY SINGLE-CRYSTAL DATA FROM AG K-ALPHA-RADIATION, AND NEUTRON SINGLE-CRYSTAL DATA FROM 1.01-A NEUTRONS [J].

CHRISTENSEN, AN ;

HAZELL, RG .

ACTA CHEMICA SCANDINAVICA, 1991, 45 (03) :226-230

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