Effect of modular diffraction gratings on absorption in P3HT:PCBM layers

    Authors

    B. Cocilovo; A. Amooali; A. Lopez-Santiago; J. Favela; S. Islam; B. Duong; P. Gangopadhyay; M. Fallahi; J. E. Pemberton; J. Thomas;R. A. Norwood

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    ORGANIC SOLAR-CELLS; LIGHT; EFFICIENCY; SILICON; Optics

    Abstract

    Various gratings with 700 nm feature spacings are patterned on the reverse side of organic solar cell active layers to increase the path length and constrain light to the cell through total internal reflection. The absorption enhancement is studied for 15, 40, and 120 nm active layers. We were able to confine 9% of the incident light over the wavelength range of 400-650 nm, with thinner gratings having a greater enhancement potential. The measurement setup utilizing an integrating sphere to fully characterize scattered or diffracted light is also fully described. (C) 2013 Optical Society of America

    Journal Title

    Applied Optics

    Volume

    52

    Issue/Number

    5

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    1025

    Last Page

    1034

    WOS Identifier

    WOS:000314842400013

    ISSN

    1559-128X

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