In this work we present the results of the photoacustical (PAS) characterization of thin film amorphous silicon (a-Si:H). The optical parameters (n,k) are obtained for semiconductive films, obtained by a reactive “DC glow discharge” process by spectral Transmission and absortion PAS measurements in a great spectral range and good agreement with previous evaluations .We determine finally the quasi gap energy (Tauc) and the band model of the semiconductor of a-Si:H.

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En este trabajo se presenta el resultado de la elaboración y caracterización de películas finas de Silicio amorfo. las películas fueron obtenidas por el Método de Descarga plasmática reactivo y a diferencia de otros trabajos realizados anteriormente por el mismo método, muestran muy buena calidad óptica, lo que ha permitido derivar los parámetros ópticos del material (índices de refracción y coeficientes de absorción), en un gran rango espectral. Se complementan los resultados con la determinación de algunas propiedades eléctricas. (Mediciones de conductividad y efecto Seebeck).

In this work we present the results of the photoacustical (PAS) characterization of thin film amorphous silicon (a-Si:H). The optical parameters (n,k) are obtained for semiconductive films, obtained by a reactive “DC glow discharge” process by spectral Transmission and absortion PAS measurements in a great spectral range and good agreement with previous evaluations .We determine finally the quasi gap energy (Tauc) and the band model of the semiconductor of a-Si:H.

In this work, we present our first results in the elaboration and characterization of thin film amorphous silicon (a-Si: H). The films were obtained by an original reactiv “DC glow discharge” process, which, compared to other results obtained with the same equipment, show now very Good optical quality. This goal allows us the measurement of the optical parameters (n, k) of our probes in a great spectral range. At this report, we show also some complementary results related to the semiconductor behaviour as the electrical conductivity and seebeck effect.