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https://repositorio.ufrn.br/handle/123456789/45704| Título: | Room temperature photoluminescence of BCT prepared by Complex Polymerization Method |
| Autor(es): | Motta, Fabiana Villela da Marques, Ana Paula de Azevedo Espinosa, José Waldo Martínez Pizani, Paulo Sérgio Silva, Elson Longo da Varela, José A. |
| Palavras-chave: | barium calcium titanate;order–disorder transition;optical properties;photoluminescence |
| Data do documento: | 2010 |
| Editor: | Elsevier |
| Referência: | MOTTA, F.V.; MARQUES, A.P.A.; ESPINOSA, J.W.M.; PIZANI, P.s.; LONGO, E.; VARELA, J.A.. Room temperature photoluminescence of BCT prepared by Complex Polymerization Method. Current Applied Physics, [S.L.], v. 10, n. 1, p. 16-20, jan. 2010. Elsevier BV. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1567173909001758?via%3Dihub. Acesso em: 10 Set. 2021. http://dx.doi.org/10.1016/j.cap.2009.04.005 |
| Resumo: | It was used the Complex Polymerization Method to synthesize barium calcium titanate powders (BCT). Crystalline Ba0.8Ca0.2TiO3 perovskite-type phase could be identified by X-ray diffraction and confirmed by Raman spectroscopy in the powders heat treated at 600 °C. Inherent defects, linked to structural disorder, facilitate the photoluminescence emission. The photoluminescent emission peak maximum was around of 533 nm (2.33 eV) for the Ba0.8Ca0.2TiO3. The photoluminescence process and the band emission energy photon showed dependence of both the structural order–disorder and the thermal treatment history. The results revealed that Ba0.8Ca0.2TiO3 (BCT20) is a highly promising candidate material for optical applications. |
| URI: | https://repositorio.ufrn.br/handle/123456789/45704 |
| Aparece nas coleções: | CT - DEMAT - Artigos publicados em periódicos |
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