Low-temperature synthesis and photoluminescence of IIA-VIB nano-phosphors doped with rare earth ions

N. Sawada, Y. Chen, T. Isobe

Research output: Contribution to journalConference article

15 Citations (Scopus)

Abstract

Eu2+ doped CaS nanoparticles were prepared by two kinds of methods, alkoxide and co-precipitation. The as-prepared samples did not show any emission, while the heated samples showed the red emission corresponding to the 4f65d1 → 4f7 transition of Eu 2+. No signal of Eu2+ was observed in the electron paramagnetic resonance spectra of the as-prepared samples, while the heated samples showed two sets of sextet hyperfine lines corresponding to two isotopes of Eu2+ with the mass numbers of 151 and 153. Accordingly, these results indicate that Eu2+ ions were incorporated into CaS during subsequent heating to show the red emission.

Original languageEnglish
Pages (from-to)824-827
Number of pages4
JournalJournal of Alloys and Compounds
Volume408-412
DOIs
Publication statusPublished - 2006 Feb 9
EventProceedings of the Rare Earths'04 in Nara, Japan -
Duration: 2004 Nov 72004 Nov 12

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Keywords

  • Electron paramagnetic resonance
  • Luminescence
  • Nanofabrications
  • Phosphors

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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