Artículo
Effects of intergranular capacitance and resistance dispersion on polycrystalline semiconductor impedance
Fecha de publicación:
12/2019
Editorial:
Elsevier Science
Revista:
Solid State Ionics
ISSN:
0167-2738
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the present work we focused on the effects, often disregarded, of the intergranular barrier fluctuations on the total impedance of polycrystalline structures. These fluctuations come from the discreteness nature and random distribution of ionized donors at the polycrystal, which are responsible of forming the intergranular barriers. Firstly, we used a numerical model that takes into account the point character of the involved donors and found that resistances and capacitances present distributions that become narrower with the grain size. Secondly, we built a bricklayer model with capacitances and resistances taken from the found distributions and calculated the total impedance, focusing on tin oxide as an example. We found the total polycrystal capacitance and resistance dependence on the specific dispersions of intergranular capacitances and resistances.
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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
Buono, Camila; Uriz, Alejandro José; Aldao, Celso Manuel; Effects of intergranular capacitance and resistance dispersion on polycrystalline semiconductor impedance; Elsevier Science; Solid State Ionics; 343; 12-2019; 115076
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