Observation of Two Independent Energy Transfer Mechanisms in BaAl 12O 19: Ce 3+0.06+Eu 2+x phosphor

Abstract

Two independent energy transfer mechanisms through electric multipole interactions between donor and acceptor ions have been found in BaAl 12O 19 : Ce 3+ 0.06 + Eu 2+ x phosphor. The first energy transfer takes place between the Ce 3+ ion and the Eu 2+ ion which strongly depends on the concentration of Eu 2+ ions. The second energy transfer occurs between the Ce 3+ ion and the Ce 3+-O Me complexes. Both energy transfer mechanisms were explained in terms of combined electric multipole interactions.