Characterizing Recombination in CdTe Solar Cells with Time-Resolved Photoluminescence: Preprint

    Research output: Contribution to conferencePaper

    Abstract

    Time-resolved photoluminescence (TRPL) computer simulations demonstrate that under certain experimental conditions it is possible to assess recombination in CdTe solar cells in spite of the junction. This is supported by experimental findings that open-circuit voltage (Voc) is dependent on lifetime in a manner consistent with device theory. Measurements on inverted structures show that the CdCl2treatment significantly reduces recombination in the CdTe layer without S diffusion. However, S diffusion is required for lifetimes comparable to those observed in high-efficiency solar cells. The results indicate that substrate solar cells can be fabricated with recombination lifetimes similar to superstrate cells.
    Original languageAmerican English
    Number of pages6
    StatePublished - 2006
    Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4) - Waikoloa, Hawaii
    Duration: 7 May 200612 May 2006

    Conference

    Conference2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4)
    CityWaikoloa, Hawaii
    Period7/05/0612/05/06

    NREL Publication Number

    • NREL/CP-520-39926

    Keywords

    • diffusion
    • fabricate
    • high efficiency
    • open-circuit voltages
    • PV
    • recombination
    • solar cells
    • time-resolved photoluminescence (TRPL)

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