Crystallization and optical properties of CCTO thin films under pressure influence

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Sequinel, T. [UNESP]
Tebcherani, S. M.
Kubaski, E. T.
Oliveira, L. H.
Li, M. Siu
Varela, J. A. [UNESP]
Laudon, M.
Romanowicz, B.

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Crc Press-taylor & Francis Group


CCTO thin films were deposited on Pt(111)/Ti/SiO2/Si substrates using a chemical (polymeric precursor) and pressure method. The pressure effects on the CCTO thin films were evaluated by XRD, FEG-SEM and optical properties. Pressure films were found to be more homogeneous and dense than chemical deposition films. Pressure also leaded to an increase in the photoluminescence emission; it is suggested that the displacement of Ti in the titanate clusters, favors the charge transference from TiO6 to [TiO5Voz], TiO5Voz] to [CaO11Voz and [TiO5Voz] to [CuO4](x). The low synthesis temperature used in the pressure method allows the deposition of films on less expensive substrates (i.e. glass, aluminum, polymer and others).



CCTO, thin films, pressure method

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Nanotechnology 2012, Vol 1: Advanced Materials, Cnts, Particles, Films And Composites. Boca Raton: Crc Press-taylor & Francis Group, p. 698-701, 2012.