The luminescence of Ce3+-sensitized and Tb3+-activated gadolinium metaphosphates (GdP3O9Ce,Tb)
1988; Elsevier BV; Volume: 74; Issue: 1 Linguagem: Inglês
10.1016/0022-4596(88)90329-5
ISSN1095-726X
AutoresH.S. Kiliaan, F.P. van Herwijnen, G. Blasse,
Tópico(s)Lanthanide and Transition Metal Complexes
ResumoEnergy transfer phenomena in rare-earth metaphosphate compounds have been investigated. For monoclinic GdP3O9Ce,Tb (1%) at 300 K, it is shown that energy transfer does not take place from Ce3+ to Gd3+, but from Gd3+ to Ce3+. Moreover, no energy migration over the Gd3+ sublattice was observed. In the case of orthorhombicLa1−xGdxP3O9Ce,Tb(1%) (x ≤ 0.68) on the other hand, the excitation energy migrates from the Ce3+ ion to the Tb3+ traps via the Gd3+ sublattice. The energy migration over the Gd3+ ions is probably one-dimensional. In CeP3O9 rapid energy migration occurs over the Ce3+ ions.
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