Artículo
Mild degradation processes in ZnObased varistors: the role of Zn vacancies
Ponce, Miguel Adolfo
; Macchi, Carlos Eugenio
; Schipani, Federico; Aldao, Celso Manuel
; Somoza, Alberto Horacio
Fecha de publicación:
02/2015
Editorial:
Taylor & Francis
Revista:
Philosophical Magazine
ISSN:
1478-6435
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effects of a degradation process on the structural and electrical properties of ZnO-based varistors induced by the application of dc bias voltage were analysed. Capacitance and resistance measurements were carried out to electrically characterize the polycrystalline semiconductor before and after different degrees of mild degradation. Vacancies’ changes in the varistors were studied with positron annihilation lifetime spectroscopy. Variations on the potential barrier height and effective doping concentration were determined by fitting the experimental data from impedance spectroscopy measurements. These results indicate two different stages in the degradation process consistent with vacancy-like concentration changes.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(CCT - TANDIL)
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Articulos(CIFICEN)
Articulos de CENTRO DE INV. EN FISICA E INGENIERIA DEL CENTRO DE LA PCIA. DE BS. AS.
Articulos de CENTRO DE INV. EN FISICA E INGENIERIA DEL CENTRO DE LA PCIA. DE BS. AS.
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Ponce, Miguel Adolfo; Macchi, Carlos Eugenio; Schipani, Federico; Aldao, Celso Manuel; Somoza, Alberto Horacio; Mild degradation processes in ZnObased varistors: the role of Zn vacancies; Taylor & Francis; Philosophical Magazine; 95; 7; 2-2015; 730-743
Compartir