Long-lasting phosphorescence in Ce-doped oxides

M. Yamaga, Y. Ohsumi, T. Nakayama, N. Kashiwagura, N. Kodama, T.P.J. Han

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Although oxide crystals doped with Ce3+ are not useful in laser operation, they have advantage in the areas such as scintillators and passive optical sources. Scintillator materials require high light-yield and fast fluorescence decay time. However, when the crystalline quality is degraded by defects created during the crystal growth process, afterglow from the crystals is observable persistently. Such phosphorescence is undesirable for scintillators, but useful in passive optical sources. The phosphorescence observed in Ca2Al2SiO7 doped with Ce3+ ions has been investigated in detail and a model is proposed to explain the mechanism responsible.
LanguageEnglish
Pages471-475
Number of pages4
JournalJournal of Materials Science: Materials in Electronics
Volume20
Issue numberSupplement 1
DOIs
Publication statusPublished - Jan 2009

Fingerprint

Phosphorescence
phosphorescence
Phosphors
Oxides
scintillation counters
oxides
Light sources
Crystals
Crystallization
afterglows
Crystal growth
doped crystals
crystal growth
Fluorescence
Ions
Crystalline materials
fluorescence
Defects
Lasers
defects

Keywords

  • phosphorescence
  • Ce-doped oxides

Cite this

Yamaga, M., Ohsumi, Y., Nakayama, T., Kashiwagura, N., Kodama, N., & Han, T. P. J. (2009). Long-lasting phosphorescence in Ce-doped oxides. Journal of Materials Science: Materials in Electronics, 20(Supplement 1), 471-475. https://doi.org/10.1007/s10854-008-9683-4
Yamaga, M. ; Ohsumi, Y. ; Nakayama, T. ; Kashiwagura, N. ; Kodama, N. ; Han, T.P.J. / Long-lasting phosphorescence in Ce-doped oxides. In: Journal of Materials Science: Materials in Electronics. 2009 ; Vol. 20, No. Supplement 1. pp. 471-475.
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Yamaga, M, Ohsumi, Y, Nakayama, T, Kashiwagura, N, Kodama, N & Han, TPJ 2009, 'Long-lasting phosphorescence in Ce-doped oxides' Journal of Materials Science: Materials in Electronics, vol. 20, no. Supplement 1, pp. 471-475. https://doi.org/10.1007/s10854-008-9683-4

Long-lasting phosphorescence in Ce-doped oxides. / Yamaga, M.; Ohsumi, Y.; Nakayama, T.; Kashiwagura, N.; Kodama, N.; Han, T.P.J.

In: Journal of Materials Science: Materials in Electronics, Vol. 20, No. Supplement 1, 01.2009, p. 471-475.

Research output: Contribution to journalArticle

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AB - Although oxide crystals doped with Ce3+ are not useful in laser operation, they have advantage in the areas such as scintillators and passive optical sources. Scintillator materials require high light-yield and fast fluorescence decay time. However, when the crystalline quality is degraded by defects created during the crystal growth process, afterglow from the crystals is observable persistently. Such phosphorescence is undesirable for scintillators, but useful in passive optical sources. The phosphorescence observed in Ca2Al2SiO7 doped with Ce3+ ions has been investigated in detail and a model is proposed to explain the mechanism responsible.

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Yamaga M, Ohsumi Y, Nakayama T, Kashiwagura N, Kodama N, Han TPJ. Long-lasting phosphorescence in Ce-doped oxides. Journal of Materials Science: Materials in Electronics. 2009 Jan;20(Supplement 1):471-475. https://doi.org/10.1007/s10854-008-9683-4