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

J. D. Furman, G. Gundiah, K. Page, N. Pizarro, A. K. Cheetham

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

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 languageEnglish
Pages (from-to)67-72
Number of pages6
JournalChemical Physics Letters
Volume465
Issue number1-3
DOIs
Publication statusPublished - 3 Nov 2008

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • General Physics and Astronomy

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