Intense violet-blue photoluminescence in BaZrO3 powders: A theoretical and experimental investigation of structural order-disorder
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Data
2008-07-15
Autores
Cavalcante, L. S.
Sczancoski, J. C.
Longo, V. M.
Vicente, Fábio Simões de [UNESP]
Sambrano, J. R. [UNESP]
de Figueiredo, A. T.
Dalmaschio, C. J.
Li, M. Siu
Varela, José Arana [UNESP]
Longo, Elson [UNESP]
Título da Revista
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Título de Volume
Editor
Elsevier B.V.
Resumo
Intense violet-blue photoluminescence (PL) emission at room temperature was verified in BaZrO3 (BZO) powders with structural order-disorder. Ab-initio calculations, ultraviolet-visible absorption spectroscopy and PL were performed. Theoretical results showed that the local disorder in the network-formed Zr clusters present an important role in the formation of hole-electron pair. The experimental data and theoretical results are in agreement, indicating that the PL emission in BZO powders can be related to the structural order-disorder degree in the lattice. (C) 2008 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
BaZrO3, photoluminescence, structural order-disorder, optical absorption behavior and ab-initio calculations
Como citar
Optics Communications. Amsterdam: Elsevier B.V., v. 281, n. 14, p. 3715-3720, 2008.