Concentration quenching of Tb3+luminescence in Tb xA3-xAl5O12 (A=Yb, Y) single crystals

M. Nikl, N. Solovieva, M. Dusek, Akira Yoshikawa, Yuji Kagamitani, T. Fukuda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Tb-doped Yb3Al5O12 and Y 3Al5O12 single crystals were grown by the micropulling-down method in the form of rods of 2 mm diameter and a few cm in length. Emission spectra and decay times of Tb3+ luminescent centers were measured for Tb concentrations in a Y(Yb) sublattice of (1-70) %. A noticeable decrease of the emission intensity and decay time was obtained for Tb concentrations above 15% and 30% for Y3Al5O12 and Yb3Al5O12 hosts, respectively. Both effects are ascribed to the concentration quenching of Tb3+ luminescence due to energy migration over the Tb3+ subsystem and subsequent energy transfer to unspecified nonradiative traps. Energy migration process and structural aspects are discussed.

Original languageEnglish
Pages (from-to)112-114
Number of pages3
JournalJournal of Ceramic Processing Research
Volume4
Issue number3
Publication statusPublished - 2003 Dec 1

Keywords

  • Concentration quenching
  • Luminescence
  • Micropulling-down crystal growth
  • Rare earth ions

ASJC Scopus subject areas

  • Ceramics and Composites

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