Efficiency enhancement in concentrator solar cells by dielectric micro-concentrators

Omer Korech, Jeffrey M. Gordon, Eugene A. Katz, Daniel Feuermann, Naftali Eisenberg

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    Essentially loss-less all-dielectric micro-fabricated optics can be tailored to completely eliminate the shadowing losses metallization grids create on the surface of concentrator solar cells. The nonimaging micro-concentrator exploits total internal reflection to redistribute the elevated flux from available macro-concentrators, rather than increasing overall concentration. The optical designs permit widening the metal fingers toward lessening series resistance losses, which can also finesse the need for the intricate metallization patterns of some high-flux cells. Realistic net efficiency gains of ∼15% (relative) are achievable in a wide variety of concentrator cells.

    Original languageEnglish
    Title of host publicationPhotovoltaic Cell and Module Technologies
    StatePublished - 1 Dec 2007
    EventPhotovoltaic Cell and Module Technologies - San Diego, CA, United States
    Duration: 27 Aug 200728 Aug 2007

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    ISSN (Print)0277-786X


    ConferencePhotovoltaic Cell and Module Technologies
    Country/TerritoryUnited States
    CitySan Diego, CA

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering


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