Você está no menu de acessibilidade

Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/25663
Título: 
Photolumiscent Properties of Nanorods and Nanoplates Y2O3:Eu3+
Autor(es): 
Instituição: 
  • Universidade Federal de São Carlos (UFSCar)
  • Universidade Estadual Paulista (UNESP)
  • Universidade de São Paulo (USP)
  • Univ Jaume 1
ISSN: 
1053-0509
Resumo: 
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 increase as the time used in the microwave-hydrothermal assisted method increases.
Data de publicação: 
1-Jul-2011
Citação: 
Journal of Fluorescence. New York: Springer/plenum Publishers, v. 21, n. 4, p. 1431-1438, 2011.
Duração: 
1431-1438
Publicador: 
Springer/plenum Publishers
Palavras-chaves: 
  • Photoluminescence
  • Nanorods
  • Nanoplates
  • Yttrium oxide
  • Europium
  • Microwavehydrothermal method
Fonte: 
http://dx.doi.org/10.1007/s10895-010-0827-6
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/25663
Aparece nas coleções:Artigos, TCCs, Teses e Dissertações da Unesp

Não há nenhum arquivo associado com este item.
 

Itens do Acervo digital da UNESP são protegidos por direitos autorais reservados a menos que seja expresso o contrário.