Photon cascade luminescence in CaAl12O19:Pr, Cr

Z. G. Nie, J. H. Zhang, X. Zhang, S. Z. Lü, X. G. Ren, G. B. Zhang, X. J. Wang

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

In this report, the Cr3+ ion was chosen as a co-dopant to modify the unpractical photon cascade emission properties of Pr3+-doped CaAl12O19 phosphors, which emit one near-UV photon from the 1S0 state followed by visible photons from the 3P0 state, into phosphors that emits two visible photons through energy transfer. The photon cascade emission process via energy transfer and the transfer mechanisms were systemically investigated by luminescence spectra and dynamics using synchrotron radiation as one of the excitation sources. The internal visible quantum efficiency of CaAl12O19:Pr, Cr was estimated and compared with CaAl12O19:Pr and the drawback to obtain the visible quantum efficiency higher than unit for CaAl12O19:Pr, Cr as a practical VUV phosphor was also discussed.

Original languageEnglish
Pages (from-to)2933-2941
Number of pages9
JournalJournal of Solid State Chemistry
Volume180
Issue number10
DOIs
StatePublished - Oct 2007

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Keywords

  • Energy transfer
  • Photon cascade luminescence
  • Synchrotron radiation

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