Blue-green and red photoluminescence in CaTiO3 : Sm

Artículos de revistas

Fecha

2007-10-01

Registro en:

Journal of Luminescence. Amsterdam: Elsevier B.V., v. 126, n. 2, p. 403-407, 2007.

0022-2313

http://hdl.handle.net/11449/37818

10.1016/j.jlumin.2006.08.100

WOS:000247409900022

8408216349957378

0000-0001-7696-3004

Autor

Universidade Federal de São Carlos (UFSCar)

Universidade de São Paulo (USP)

Universidade Estadual Paulista (Unesp)

Institución

Universidade Estadual Paulista (Brasil)

Resumen

Blue-green and red photoluminescence (PL) emission in structurally disordered CaTiO3:Sm (CT:Sm) powders was observed at room temperature with laser excitation at 350.7 nm. The perovskite-like titanate CT:Sm powders prepared by a soft chemical processing at different temperatures of annealing were structurally characterized by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). The results indicate that the generation of the broad PL band is related to order-disorder degree in the perovskitelike structure. (c) 2006 Elsevier B.V. All rights reserved.

Materias

luminescence

order-disorder

optical materials

CT : Sm

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