期刊
CHEMICAL PHYSICS LETTERS
卷 465, 期 1-3, 页码 67-72出版社
ELSEVIER
DOI: 10.1016/j.cplett.2008.09.045
关键词
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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. .
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