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

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