Optical Design and Analysis of Textured a-Si Solar Cells: Preprint

    Research output: Contribution to conferencePaper


    The effect of texture on enhancement and losses in photocurrent in a-Si solar cells is explored using PVOPTICS software and measurements on a-Si device structures. The texture angle has a major impact on light trapping and internal reflection. Increasing the angle causes better internal trapping in the i-layer, but also higher SnO2/a-Si reflection losses, as well as SnO2 and metal absorptionlosses. Parasitic absorption in the textured SnO2 due to back reflected light is 1-2 mA/cm2 for typical designs. N-i-p cells have a fundamental advantage over p-i-n cells since the textured TCO is at the rear of the device leading to lower losses.
    Original languageAmerican English
    Number of pages7
    StatePublished - 2002
    Event29th IEEE PV Specialists Conference - New Orleans, Louisiana
    Duration: 20 May 200224 May 2002


    Conference29th IEEE PV Specialists Conference
    CityNew Orleans, Louisiana

    Bibliographical note

    Prepared for the 29th IEEE PV Specialists Conference, 20-24 May; 2002, New Orleans, Louisiana

    NREL Publication Number

    • NREL/CP-520-31477


    • a-Si solar cells
    • light trapping
    • optical analysis
    • parasitic absorption
    • photocurrent
    • photocurrent
    • PV
    • variable angle spectroscopic ellipsometry (vase)


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