Submicron Y 2O 3 particles codoped with Eu and Tb ions: Size controlled synthesis and tuning the luminescence emission

Timur Sh Atabaev, Hyung Kook Kim, Yoon Hwae Hwang

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Eu 3+ and Tb 3+ codoped Y 2O 3 submicron particles were prepared using the simple urea homogeneous precipitation method. X-ray diffraction patterns revealed the synthesized particles to have a pure cubic Y 2O 3 structure. Field-emission scanning electron microscopy and field-emission transmission electron microscopy showed that the synthesized particles had almost uniform spherical shapes. The luminescence color emission of the synthesized particles could be tuned from red due to the effective 5D 07F j (j=0, 1, 2 and 3) transitions within Eu 3+ to green due to the 5D 47F 5 transition within Tb 3+ by switching the excitation wavelength from 255 to 310nm. Luminescence quenching was observed at high dopant concentrations. Strong and effective color-tunable emission is expected to find a wide range of applications in industry.

Original languageEnglish
Pages (from-to)14-19
Number of pages6
JournalJournal of Colloid and Interface Science
Volume373
Issue number1
DOIs
Publication statusPublished - May 1 2012
Externally publishedYes

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Keywords

  • Doping
  • Luminescence
  • Urea homogeneous precipitation
  • Y O particles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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