CLAUDIA AKEMI KODAIRA GOES
13 resultados
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Resumo IPEN-doc 14678 Persistent luminescence BaAlsub(2)Osub(4):Eusup(2+), Dysup(3+) phosphor incorporated in silica: water resistance2009 - LOURENCO, A.V.S.; RODRIGUES, L.C.V.; KODAIRA, C.A.; STEFANI, R.; BRITO, H.F.; FELINTO, M.C.F.C.; HOLSA, J.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.Resumo IPEN-doc 16285 Photoluminescent study of polymeric system based on rare 'beta'-diketonate crown complexes and polymethylmetacrylate film2008 - VERLOZA, A.; KODAIRA, C.A.; FELINTO, M.C.F.C.; BRITO, H.F.Resumo IPEN-doc 15388 Investigacao fotoluminescente do sistema Ysub(2)Osub(3):Tbsup(3) obtido via metodos de combustao e de Pechini2006 - KODAIRA, CLAUDIA A.; FELINTO, MARIA C.F.C.; BRITO, HERMI F. deResumo IPEN-doc 12399 Estudo fotoluminescente de SnOsub(2):Eusup(3+) preparado pelo metodo Pechini2007 - KODAIRA, CLAUDIA A.; FELINTO, MARIA C.F.C.; BRITO, HERMI F.; FALLA, PILAR H.; PERES, HENRIQUE E.Resumo IPEN-doc 12374 Green luminescence of Tbsup(3+) doped in cadmium silicate2007 - STEFANI, R.; RODRIGUES, L.C.V.; KODAIRA, C.A.; FELINTO, M.C.F.C.; BRITO, H.F.Artigo IPEN-doc 09522 Luminescence investigation of Eusup(3+) ion in the REsub(2)(WOsub(4))sub(3) matrix (RE=La and Gd) produced using the Pechini method2002 - KODAIRA, C.A.; BRITO, H.F.; FELINTO, M.C.F.C.Artigo IPEN-doc 15201 Study of quantum dota based on tin/yttrium mixed oxide doped with terbium to be used as biomarker2009 - PAGANINI, PAULA P.; FELINTO, MARIA C.F.C.; KODAIRA, CLAUDIA A.; BRITO, HERMI F.; NUNES, LUIZ A.O.Artigo IPEN-doc 10543 Photoluminescence behaviour of the Smsup(3+) and Tbsup(3+) ions doped into Gdsub(2)(WOsub(4))sub(3) matrix prepared by pechini and ceramic methods2004 - KODAIRA, C.A.; BRITO, H.F.; TEOTONIO, E.E.S.; FELINTO, M.C.F.C.; MALTA, O.L.; BRITO, G.E.S.Artigo IPEN-doc 09517 Luminescence investigation of Eusup(3+) ion in the REsub(2)(WOsub(4))sub(3) matrix (RE=La and Gd) produced using the Pechini method2003 - KODAIRA, C.A.; BRITO, H.F.; FELINTO, M.C.F.C.Artigo IPEN-doc 09800 Luminescence investigations on Eu(III) thenoyltrifluoroacetonate complexes with amide ligands2003 - TEOTONIO, E.E.S.; BRITO, H.F.; FELINTO, M.C.F.C.; KODAIRA, C.A.; MALTA, O.L.