Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3

Xianmin Zhang, Jiahua Zhang, Xia Zhang, Li Chen, Shaozhe Lu, Xiao Jun Wang

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)


CaTiO3: Pr3+ with addition Lu2O3 are synthesized by conventional solid-state reaction methods. It is found that the addition of Lu leads to the enhancement of red fluorescence and phosphorescence at 615 nm originating from 1D23H4 transition of Pr3+, following the increase of the lifetime for the 1D2 state. As a result, it is indicated that the non-radiative centers for the 1D2 state are suppressed by the addition of Lu ions. The persistent time of the afterglow is observed to increase from less than 15 min to over 2 h after the addition of 5 mol% Lu2O3. A tentative mechanism of the Lu-addition effect on the optical properties is discussed.

Original languageEnglish
Pages (from-to)958-960
Number of pages3
JournalJournal of Luminescence
Issue number1-2
Publication statusPublished - 2007 Jan
Externally publishedYes


  • Pr
  • Red afterglow
  • Red phosphor

ASJC Scopus subject areas

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


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