Abstract
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.
Original language | English |
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Pages (from-to) | 67-72 |
Number of pages | 6 |
Journal | Chemical Physics Letters |
Volume | 465 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 3 Nov 2008 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- General Physics and Astronomy