Structural, electrical and optical properties of (K,Ba)(Nb,Ni)O3-d electroceramics: oxygen vacancy and grain size effects.
GUERRA, J. D. S.; SILVA, M. C. O.; SILVA, A. C.; OLIVEIRA, M. A.; MENDEZ-GONZÁLEZ, Y.; MONTE, A. F. G.; M'PEKO, Jean Claude; HERNANDES, Antônio Carlos.
GUERRA, J. D. S.; SILVA, M. C. O.; SILVA, A. C.; OLIVEIRA, M. A.; MENDEZ-GONZÁLEZ, Y.; MONTE, A. F. G.; M'PEKO, Jean Claude; HERNANDES, Antônio Carlos.
Abstract: 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-xBaNi1/2Nb1/2O3-d(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.
@article={002998964,author = {GUERRA, J. D. S.; SILVA, M. C. O.; SILVA, A. C.; OLIVEIRA, M. A.; MENDEZ-GONZÁLEZ, Y.; MONTE, A. F. G.; M'PEKO, Jean Claude; HERNANDES, Antônio Carlos.},title={Structural, electrical and optical properties of (K,Ba)(Nb,Ni)O3-d electroceramics: oxygen vacancy and grain size effects},journal={Ceramics International},note={v. 46, n. 12, p. 20201-20206},year={2020}}