Method for Evaluating the Severity of Solar Cell Cracks in Electroluminescence Images

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    Abstract

    The severity of solar cell cracks is most often evaluated qualitatively, by assigning them to one of several categories. In this work we propose a machine analysis friendly metric for evaluating the severity of solar cell cracks from electroluminescence (EL) images. The metric is derived from the EL intensity versus camera sensor exposure time characteristic of the active solar cell regions, relative to that of non-radiative regions of the EL image. Thereafter an image segmentation method is used to determine the area and position of cracks above a certain severity level.
    Original languageEnglish
    Title of host publicationProceedings of 37th European Photovoltaic Solar Energy Conference and Exhibition
    Publication date2020
    Pages1130-1135
    ISBN (Print)3-936338-73-6
    DOIs
    Publication statusPublished - 2020
    Event37th European PV Solar Energy Conference and Exhibition - Online
    Duration: 7 Sept 202011 Sept 2020
    Conference number: 37
    https://www.photovoltaic-conference.com/

    Conference

    Conference37th European PV Solar Energy Conference and Exhibition
    Number37
    LocationOnline
    Period07/09/202011/09/2020
    Internet address

    Keywords

    • Electroluminescence
    • Characterisation
    • Photovoltaic modules,
    • Quantitative analysis
    • Severity
    • Solar cell cracks

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