Observation of Two Independent Energy Transfer Mechanisms in BaAl12O19: Ce3+0.06+Eu2+x phosphor

Two independent energy transfer mechanisms through electric multipole interactions between donor and acceptor ions have been found in BaAl12O19 : Ce3+0.06 + Eu2+x phosphor. The first energy transfer takes place between the Ce3+ ion and the Eu2+ ion which strongly depends on the concentration of Eu2+ ions. The second energy transfer occurs between the Ce3+ ion and the Ce3+-OMe complexes. Both energy transfer mechanisms were explained in terms of combined electric multipole interactions.