Photolumiscent properties of nanorods and nanoplates Y2O3:Eu3+
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Otros documentos de la autoría: De Moura, Ana Paula; De Oliveira, Larissa Helena; Paris, Elaine Cristina; Siu Li, Maximo; Andres, Juan; Arana Varela, José; Longo, Elson; Rosa, Ieda
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
comunitat-uji-handle4:
INVESTIGACIONMetadatos
Título
Photolumiscent properties of nanorods and nanoplates Y2O3:Eu3+Autoría
Fecha de publicación
2011Editor
Springer VerlagISSN
1053-0509; 1573-4994Cita bibliográfica
Journal of Fluorescence (2011) vol. 21, no. 4, pp. 1431-1438Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
Nanorods and nanoplates of Y2O3:Eu3+ powders were synthesized through the thermal decomposition of the Y(OH)3 precursors using a microwave-hydrothermal method in a very short reaction time. These powders were analyzed ... [+]
Nanorods and nanoplates of Y2O3:Eu3+ powders were synthesized through the thermal decomposition of the Y(OH)3 precursors using a microwave-hydrothermal method in a very short reaction time. These powders were analyzed by X-ray diffraction, field emission scanning electron microscopy, Fourrier transform Raman, as well as photoluminescence measurements. Based on these results, these materials presented nanoplates and nanorods morphologies. The broad emission band between 300 and 440 nm ascribed to the photoluminescence of Y2O3 matrix shifts as the procedure used in the microwave-hydrothermal assisted method changes in the Y2O3:Eu3+ samples. The presence of Eu3+ and the hydrothermal treatment time are responsible for the band shifts in Y2O3:Eu3+ powders, since in the pure Y2O3 matrix this behavior was not observed. Y2O3:Eu3+ powders also show the characteristic Eu3+ emission lines at 580, 591, 610, 651 and 695 nm, when excited at 393 nm. The most intense band at 610 nm is responsible for the Eu3+ red emission in these materials, and the Eu3+ lifetime for this transition presented a slight ncrease as the time used in the microwave-hydrothermal assisted method increases. [-]
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