Title of article
Disorder-dependent photoluminescence in Ba0.8Ca0.2TiO3 at room temperature
Author/Authors
F.V. Motta، نويسنده , , A.T. de Figueiredo، نويسنده , , V.M. Longo، نويسنده , , V.R. Mastelaro، نويسنده , , A.Z. Freitas، نويسنده , , L. Gomes، نويسنده , , N.D. Vieira Jr.، نويسنده , , E. Longo، نويسنده , , J.A. Varela، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
5
From page
686
To page
690
Abstract
The photoluminescence (PL) emission in structurally disordered Ba0.8Ca0.2TiO3 (BCT20) powders was observed at room temperature with laser excitation at lines 355 and 460 nm. The structural evolution perovskite-like titanate BCT20 powders prepared by a soft chemical processing at different annealing temperatures were accompanied by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). Intermediate oxycarbonate phase was identified and your influence with PL emission was discarding. BCT20 annealed at 500 °C displays intense PL emission. The results indicate relationship between broad PL band and order–disorder degree.
Keywords
Amorphous semiconductors , titanates , Photoluminescence , Order–disorder , BCT
Journal title
Journal of Luminescence
Serial Year
2009
Journal title
Journal of Luminescence
Record number
1259526
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