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

N. Sawada, Y. Chen, Tetsuhiko Isobe

Research output: Contribution to journalArticle

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

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Coprecipitation
Isotopes
Phosphors
Rare earths
Paramagnetic resonance
Photoluminescence
Ions
Nanoparticles
Heating
Temperature

Keywords

  • Electron paramagnetic resonance
  • Luminescence
  • Nanofabrications
  • Phosphors

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Low-temperature synthesis and photoluminescence of IIA-VIB nano-phosphors doped with rare earth ions. / Sawada, N.; Chen, Y.; Isobe, Tetsuhiko.

In: Journal of Alloys and Compounds, Vol. 408-412, 09.02.2006, p. 824-827.

Research output: Contribution to journalArticle

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AB - 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.

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