Catoptric electrodes: transparent metal electrodes using shaped surfaces

    Authors

    P. G. Kik

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    Optics

    Abstract

    An optical electrode design is presented that theoretically allows 100% optical transmission through an interdigitated metallic electrode at 50% metal areal coverage. This is achieved by redirection of light incident on embedded metal electrode lines to an angle beyond that required for total internal reflection. Full-field electromagnetic simulations using realistic material parameters demonstrate 84% frequency-averaged transmission for unpolarized illumination across the entire visible spectral range using a silver interdigitated electrode at 50% areal coverage. The redirection is achieved through specular reflection, making it nonresonant and arbitrarily broadband, provided the electrode width exceeds the optical wavelength. These findings could significantly improve the performance of photovoltaic devices and optical detectors that require high-conductivity top contacts. (C) 2014 Optical Society of America

    Journal Title

    Optics Letters

    Volume

    39

    Issue/Number

    17

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    5114

    Last Page

    5117

    WOS Identifier

    WOS:000341100300036

    ISSN

    0146-9592

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