Persistent luminescence BaAlsub(2)Osub(4):Eusup(2+), Dysup(3+) phosphor incorporated in silica: water resistance
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2009
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INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, 11th
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Barium aluminates doped with divalent europium and trivalent dysprosium were prepared with the combustion
method and then incorporated with silica using the microemulsion method. The incorporated phosphor particles showed improved water
resistance, preserving much of the prior persistent luminescence properties even after interaction with water whereas the nonincorporated particles loosed the original persistent luminescence. The infrared absorption spectroscopy, X-ray powder diffraction
(XRD), scanning electron microscopy (SEM) and photoluminescence studies were used to characterize the phosphors. The pH of the
phosphor-water mixture after the reaction with water was measured to compare the water resistance of the materials. The
photoluminescence of the incorporated BaAl2O4:Eu2+,Dy3+ with water modified slightly the 4f6
5d1
→4f7
transition of Eu2+, however.
Como referenciar
LOURENCO, A.V.S.; RODRIGUES, L.C.V.; KODAIRA, C.A.; STEFANI, R.; BRITO, H.F.; FELINTO, M.C.F.C.; HOLSA, J. Persistent luminescence BaAlsub(2)Osub(4):Eusup(2+), Dysup(3+) phosphor incorporated in silica: water resistance. In: INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, 11th, September 20-25, 2009, Rio de Janeiro, RJ. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/22866. Acesso em: 16 Mar 2025.
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