Photovoltaic Spectral Responsivity Measurements

    Research output: Contribution to conferencePaper

    Abstract

    This paper discusses the various elemental random and nonrandom error sources in typical spectral responsivity measurement systems. We focus specifically on the filter and grating monochrometer-based spectral responsivity measurement systems used by the Photovoltaic (PV) performance characterization team at NREL. A variety of subtle measurement errors can occur that arise from a finitephoto-current response time, bandwidth of the mono-chromatic light, waveform of the monochromatic light, and spatial uniformity of the monochromatic and bias lights; the errors depend on the light source, PV technology, and measurement system. The quantum efficiency can be a function of the voltage bias, light bias level, and, for some structures, the spectral content of the bias light orlocation on the PV device. This paper compares the advantages and problems associated with semiconductor-detector-based calibrations and pyroelectric-detector-based calibrations. Different current-to-voltage conversion and ac photo-current detection strategies employed at NREL are compared and contrasted.
    Original languageAmerican English
    Number of pages5
    StatePublished - 1998
    Event2nd World Conference on Photovoltaic Solar Energy Conversion - Vienna, Austria
    Duration: 6 Jul 199810 Jul 1998

    Conference

    Conference2nd World Conference on Photovoltaic Solar Energy Conversion
    CityVienna, Austria
    Period6/07/9810/07/98

    NREL Publication Number

    • NREL/CP-530-23878

    Fingerprint

    Dive into the research topics of 'Photovoltaic Spectral Responsivity Measurements'. Together they form a unique fingerprint.

    Cite this