Título:
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Optical spectroscopic study of the SiN/HfO2 interfacial formation during rf sputtering of HfO2
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Autores:
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Mártil de la Plaza, Ignacio ;
González Díaz, Germán ;
Prado Millán, Álvaro del ;
San Andres Serrano, Enrique
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Tipo de documento:
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texto impreso
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Editorial:
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Amer Inst Physics, 2007-11-05
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Electricidad
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Materia = Ciencias: Física: Electrónica
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Tipo = Artículo
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Resumen:
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High-k stacks formed by chemical-vapor-deposited SiN and high-pressure sputtered HfO2 in either O-2 or Ar atmosphere have been studied. The introduction of a SiN layer is proposed to prevent the uncontrollable SiO2 growth while sputtering. The formation of Si-O bonds after the sputtering of the HfO2 film in O-2 atmosphere was observed by infrared spectroscopy. Optical diagnosis of the plasma demonstrated a high density of O radicals in the system when working with O-2. The small radius and high reactivity of these O radicals are the source of the SiN oxidation. However, the structure of the SiN film is preserved during Ar sputtering.
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En línea:
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https://eprints.ucm.es/id/eprint/25981/1/Martil%2C30libre.pdf
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