2014
DOI: 10.17230/ingciencia.10.20.2
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Estudio de la respuesta espectral en el visible de películas delgadas de ZnSe

Abstract: En este trabajo es presentado el estudio de la fotoconductividad en películas delgadas de ZnSe depositadas sobre sustratos de vidrio a diferentes temperaturas, en condiciones de alto vacío usando la técnica de evaporación térmica. El efecto de la temperatura de sustrato sobre la fotoconductividad espectral y las propiedades morfológicas de las películas delgadas de ZnSe fueron estudiados. Para las medidas de fotoconductividad se depositaron contactos de cobre sobre las muestras. Se midieron las respuestas espe… Show more

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“…The fact that the values of the plasma frequency ω p are less than the frequency ω makes the permittivity negative, causing the waves to be reflected and preventing them from propagating in the medium. Semiconductors, especially CdS and CdTe, have low densities of free carriers, so the plasma frequency is between the mid and near-infrared [29].…”
Section: Resultsmentioning
confidence: 99%
“…The fact that the values of the plasma frequency ω p are less than the frequency ω makes the permittivity negative, causing the waves to be reflected and preventing them from propagating in the medium. Semiconductors, especially CdS and CdTe, have low densities of free carriers, so the plasma frequency is between the mid and near-infrared [29].…”
Section: Resultsmentioning
confidence: 99%