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Polycrystallization effects on the nanoscale electrical properties of high-k dielectrics

In this study, atomic force microscopy-related techniques have been used to investigate, at the nanoscale, how the polycrystallization of an Al(2)O(3)-based gate stack, after a thermal annealing process, affects the variability of its electrical properties. The impact of an electrical stress on the...

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Detalles Bibliográficos
Autores principales: Lanza, Mario, Iglesias, Vanessa, Porti, Marc, Nafria, Montse, Aymerich, Xavier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3211152/
https://www.ncbi.nlm.nih.gov/pubmed/21711617
http://dx.doi.org/10.1186/1556-276X-6-108
Descripción
Sumario:In this study, atomic force microscopy-related techniques have been used to investigate, at the nanoscale, how the polycrystallization of an Al(2)O(3)-based gate stack, after a thermal annealing process, affects the variability of its electrical properties. The impact of an electrical stress on the electrical conduction and the charge trapping of amorphous and polycrystalline Al(2)O(3 )layers have been also analyzed.