Absorption enhancement using photonic crystals for silicon thin film solar cells

Yeonsang Park, Emmanuel Drouard, Ounsi El Daif, Xavier Letartre, Pierre Viktorovitch, Alain Fave, Anne Kaminski, Mustapha Lemiti, Christian Seassal

    Research output: Contribution to journalArticle

    178 Citations (Scopus)

    Abstract

    We propose a design that increases significantly the absorption of a thin layer of absorbing material such as amorphous silicon. This is achieved by patterning a one-dimensional photonic crystal (1DPC) in this layer. Indeed, by coupling the incident light into slow Bloch modes of the 1DPC, we can control the photon lifetime and then, enhance the absorption integrated over the whole solar spectrum. Optimal parameters of the 1DPC maximize the integrated absorption in the wavelength range of interest, up to 45% in both S and P polarization states instead of 33% for the unpatterned, 100 nm thick amorphous silicon layer. Moreover, the absorption is tolerant with respect to fabrication errors, and remains relatively stable if the angle of incidence is changed.

    Original languageEnglish
    Pages (from-to)14312-14321
    Number of pages10
    JournalOptics Express
    Volume17
    Issue number16
    DOIs
    Publication statusPublished - 3 Aug 2009

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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  • Cite this

    Park, Y., Drouard, E., Daif, O. E., Letartre, X., Viktorovitch, P., Fave, A., Kaminski, A., Lemiti, M., & Seassal, C. (2009). Absorption enhancement using photonic crystals for silicon thin film solar cells. Optics Express, 17(16), 14312-14321. https://doi.org/10.1364/OE.17.014312