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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Red shift and higher photoluminescence emission of CCTO thin films undergoing pressure treatment

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Author(s):
Sequinel, T. [1] ; Garcia, I. G. [1] ; Tebcherani, S. M. [2] ; Kubaski, E. T. [3] ; Oliveira, L. H. [1] ; Siu Li, M. [4] ; Longo, E. [1] ; Varela, J. A. [1]
Total Authors: 8
Affiliation:
[1] UNESP, Inst Quim, BR-14800900 Araraquara, SP - Brazil
[2] UTFPR, Dept Prod Engn, BR-84016210 Ponta Grossa, PR - Brazil
[3] Itajara Minerios Ltda, BR-84010050 Ponta Grossa, PR - Brazil
[4] Univ Sao Paulo, Inst Fis, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 583, p. 488-491, JAN 15 2014.
Web of Science Citations: 7
Abstract

CCTO thin films were deposited on Pt(111)/Ti/SiO2/Si substrates using a chemical (polymeric precursor) and pressure method. Pressure effects on CCTO thin films were evaluated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and optical properties which revealed that a pressure film (PF) is denser and more homogeneous than a chemical film (CF). Pressure also causes a decrease in the band gap and an increase in the photoluminescence (PL) emission of CCTO films which suggests that the pressure facilitates the displacement of Ti in the titanate clusters and the charge transference from TiO6 to {[}TiO5V0z], {[}TiO5V0z] to {[}CaO11V0z] and {[}TiO5V0z] to {[}CuO4](x). (C) 2013 Elsevier B. V. All rights reserved. (AU)

FAPESP's process: 09/11099-2 - PREPARATION AND CHARACTERIZATION OF CaCu3Ti4O12 THIN FILMS BY HIGH PRESSURE IM SILICON SUBSTRATE WITH DIFFERENT ELECTRODES
Grantee:Thiago Sequinel
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 98/14324-0 - Multidisciplinary Center for Development of Ceramic Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC