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        Temporal evolution of anodization current of porous silicon samples

        Registration in:
        2153-117X
        http://dx.doi.org/10.4236/msa.2013.48A005
        http://hdl.handle.net/20.500.12010/9477
        http://expeditiorepositorio.utadeo.edu.co
        http://dx.doi.org/10.4236/msa.2013.48A005
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/3503177
        Author
        Gutiérrez, Adriana
        Giraldo, Jairo
        Rodríguez-García, Mario Enrique
        Institutions
        • Universidad Jorge Tadeo Lozano (Colombia)
        Abstract
        Temporal evolution of the anodization current of porous silicon samples was studied by means of a model of resistances connected in series that represented the temporal changes of the substrate and of the interface between the substrate and the electrolyte during the porous sample formation process. The porous samples were obtained by means of photoelec-trochemical etching of (100) n-type silicon wafers with different resistivity values, all in the range of 1 - 25 cm. The samples were formed at room temperature in an electrolytic bath composed by a mixture of hydrofluoric acid (48%) and ethanol having a composition ratio of 1:1 in volume under potentiostatic condition (10 V and 20 V) and an etching time of 2 minutes using back illumination provided by a laser beam with a wavelength of 808 nm.
        Subjects
        Porous silicon
        Electrochemical etching
        Anodization current

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        Red de Repositorios Latinoamericanos
        + of 8.000.000
        Available publications
        500 Participating institutions
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Membership Login
        Featured collections
        • Latin American Theses
        • Argentinean Theses
        • Chilean Theses
        • Peruvian Theses
        Latest collections added
        • Argentina
        • Brazil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018