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

Photoluminescence emission in zirconium-doped calcium copper titanate powders

Full text
Author(s):
Moura, F. [1] ; Cabral, A. C. [1] ; Rocha, L. S. R. [2] ; Aguiar, E. C. [3] ; Simoes, A. Z. [2] ; Longo, E. [3]
Total Authors: 6
Affiliation:
[1] Univ Fed Itajuba Unifei, Lab Interdisciplinar Mat Avancados, Campus Itabira, Rua Sao Paulo 377, POB 355, BR-3590037 Itabira, MG - Brazil
[2] Univ Estadual Paulista Unesp, Fac Engn Guaratingue, Av Dr Ariberto Pereira Cunha 333, POB 355, BR-12516410 Guaratingueta, SP - Brazil
[3] Univ Estadual Paulista, Inst Quim, Lab Interdisciplinar Ceram, POB 355, BR-14801907 Araraquara, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 42, n. 4, p. 4837-4844, MAR 2016.
Web of Science Citations: 3
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 degrees 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 degrees C, which is neither highly disordered nor completely ordered at similar to 520 nm. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC