| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5402600 | Journal of Luminescence | 2009 | 5 Pages |
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
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
F.V. Motta, A.T. de Figueiredo, V.M. Longo, V.R. Mastelaro, A.Z. Freitas, L. Gomes, N.D. Jr., E. Longo, J.A. Varela,