Electron-induced luminescence of SrCe0.95Yb0.05O 3-δ

B. Tsuchiya, A. Morono, E. R. Hodgson, S. Nagata, K. Toh, Tatsuo Shikama

Research output: Contribution to journalArticlepeer-review

Abstract

Radioluminescence of perovskite-type oxide ceramics doped with rare-earth Yb3+ ions (SrCe0.95Yb0.05O3-δ) was observed under irradiation with 1.8 MeV electrons at dose rates of 300 Gy/s at room temperature. Wide asymmetrical emission bands, associated with charge transfer vibronic exciton (CTVE) between O2- and Ce4+, oxygen vacancies with one or two trapped electrons and defects created due to dopant Yb3+ ions, kept on producing in the ultraviolet (200-400 nm) and visible (400-800 nm) regions up to dose of 7.6 MGy. The result indicates that Yb-doped SrCeO3 may be suitable as a material for radiation-induced luminescence. It was also found that the electron-induced luminescence in 500-650 nm at 7.6 MGy was apparently enhanced by annihilation of some absorption bands, due to reduction of Ce4+ by irradiation.

Original languageEnglish
Pages (from-to)75-79
Number of pages5
JournalJournal of Luminescence
Volume112
Issue number1
DOIs
Publication statusPublished - 2005 Apr

Keywords

  • Electron irradiation
  • Optical absorption
  • Radioluminescence

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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