Direct evidence for excitation transfer from the 5D4 manifold of Tb3+ to the 5D1 manifold of Eu3+ in Tb0.66Eu0.33P5O14

I. Laulicht, S. Meirman

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28 Scopus citations

Abstract

5D17F1 emission lines of Eu3+ are clearly seen when the 5D4 manifold of Tb3+ is excited. The 5D1 lifetime at 45 K is 7 μs when excited through the 5D2 manifold of Eu3+ but is equal to the 5D4 (Tb3+) lifetime when excited through that manifold. These results together with the temperature dependence of the Tb3+→Eu3+ transfer rate are interpreted as direct evidence for a nonradiative transfer from the 5D4 (Tb3+) manifold to the 5D1 (Eu3+) manifold. The transfer rate at high temperatures supports the conjecture that the cross relaxation transfer at these temperatures is mainly via the 7F1 (Eu3+) manifold.

Original languageEnglish
Pages (from-to)287-293
Number of pages7
JournalJournal of Luminescence
Volume34
Issue number6
DOIs
StatePublished - 1986

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