Publicação: Blue-green and red photoluminescence in CaTiO3 : Sm
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Elsevier B.V.
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Resumo
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.
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luminescence, order-disorder, optical materials, CT : Sm
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Inglês
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Journal of Luminescence. Amsterdam: Elsevier B.V., v. 126, n. 2, p. 403-407, 2007.
