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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.)

Structural, electrical and optical properties of (K,Ba)(Nb,Ni)O3-delta electroceramics: Oxygen vacancy and grain size effects

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Guerra, J. D. S. [1, 2] ; Silva, M. C. O. [1] ; Silva, A. C. [1] ; Oliveira, M. A. [1] ; Mendez-Gonzalez, Y. [3] ; Monte, A. F. G. [4] ; M'Peko, J-C [2] ; Hernandes, A. C. [2]
Total Authors: 8
[1] Univ Fed Uberlandia, Inst Fis, Grp Ferroeletr & Mat Multifuncionais, BR-38408100 Uberlandia, MG - Brazil
[2] Univ Sao Paulo, Inst Fis Sao Carlos, Grp Nanomat & Ceram Avancadas, BR-13560970 Sao Carlos, SP - Brazil
[3] Univ La Habana, Inst Ciencia & Tecnol Mat, Fac Fis, Havana 10400 - Cuba
[4] Univ Fed Uberlandia, Inst Fis, Grp Opt & Fototerm, BR-38408100 Uberlandia, MG - Brazil
Total Affiliations: 4
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 46, n. 12, p. 20201-20206, AUG 15 2020.
Web of Science Citations: 0

KNbO3-based ferroelectric materials have been largely investigated as a result of many interesting physical properties that make them suitable for designing multifunctional electronic components. In particular, ferroelectric (1-x)KNbO3-xBaNi(1/2)Nb(1/2)O(3-delta) (KBNN) solid solutions have received special attention for optical applications, including for high-performance photovoltaic devices. In this work, KBNN ceramics were produced via conventional solid-state sintering, followed by a comprehensive study of their (micro)structural, electrical and optical properties. The processed data are analyzed and discussed in terms of the effect from structural oxygen-vacancy defects in such materials and from the grain size, in the specific case of the observed electrical response. Overall, the results suggest these perovskite-structured semiconducting ferroelectric oxides as a good alternative for solar cell applications. (AU)

FAPESP's process: 18/24352-7 - Development and Study of Electroceramic Materials with Technological Interest
Grantee:Antônio Carlos Hernandes
Support type: Research Grants - Visiting Researcher Grant - Brazil