| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10624352 | Ceramics International | 2016 | 8 Pages |
Abstract
Intense photoluminescence (PL) emission was observed in Zr-doped calcium copper titanate powders. The compounds were synthesized by a soft chemical method and heat treated at temperatures between 300 and 850 °C. The decomposition of the precursors was examined by X-ray diffraction, Fourier transform infrared, Fourier transform Raman, and ultraviolet-visible spectroscopies; as well as PL analysis. Here, we discuss the role of the structural ordering, which facilitates the self-trapping of electrons and charge transfer, and review the mechanism that triggers the PL. The most intense PL emission was obtained for the sample with 5% Zr calcined at 750 °C, which is neither highly disordered nor completely ordered at ~520 nm.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F. Moura, A.C. Cabral, L.S.R. Rocha, E.C. Aguiar, A.Z. Simões, E. Longo,