Room temperature photoluminescence of BCT prepared by Complex Polymerization Method

It was used the Complex Polymerization Method to synthesize barium calcium titanate powders (BCT). Crystalline Ba 0.8Ca 0.2TiO 3 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 struc...

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Bibliographic Details
Published in:Current applied physics 2010, 10(1), , pp.16-20
Main Authors: Motta, F.V., Marques, A.P.A., Espinosa, J.W.M., Pizani, P.S., Longo, E., Varela, J.A.
Format: Article
Language:English
Subjects:
Barium calcium titanate
Optical properties
Order–disorder transition
Photoluminescence
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Summary:It was used the Complex Polymerization Method to synthesize barium calcium titanate powders (BCT). Crystalline Ba 0.8Ca 0.2TiO 3 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 Ba 0.8Ca 0.2TiO 3. 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 Ba 0.8Ca 0.2TiO 3 (BCT20) is a highly promising candidate material for optical applications.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2009.04.005