Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Photoluminescence of disordered ABO3 perovskites

2000; American Institute of Physics; Volume: 77; Issue: 6 Linguagem: Inglês

10.1063/1.1306663

1520-8842

P.S. Pizani, E. R. Leite, F. M. Pontes, Elaine Cristina Paris, José Hilton Gomes Rangel, Eduardo J. H. Lee, E. Longo, P. Delega, J. A. Varela,

Electronic and Structural Properties of Oxides

Intense photoluminescence in highly disordered (amorphous) BaTiO3, PbTiO3, and SrTiO3 prepared by the polymeric precursor method was observed at room temperature. The emission band maxima from the three materials are in the visible region and depend on the exciting wavelength. The origin of the photoluminescence was not exactly identified. However, the line shape indicates that confinement effects are not probable. The experimental results indicate that it could be related to the disordered perovskite structure.