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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

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Autor(es):
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]
Número total de Autores: 8
Afiliação do(s) autor(es):
[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
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: CERAMICS INTERNATIONAL; v. 46, n. 12, p. 20201-20206, AUG 15 2020.
Citações Web of Science: 0
Resumo

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)

Processo FAPESP: 18/24352-7 - Desenvolvimento e Estudo de Materiais Eletro-cerâmicos com Interesse Tecnológico
Beneficiário:Antônio Carlos Hernandes
Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Brasil