Outdoor photoluminescence imaging of photovoltaic modules
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United States of America
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Mar 18, 2025
Grant Date -
Jul 27, 2023
app pub date -
Jun 11, 2021
filing date -
Jun 11, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus are presented for measuring a photoluminescence (PL) response, preferably a spatially resolved image of a PL response, from an object exposed to solar irradiation. In certain embodiments signals from the object are measured in two or more different spectral bands selected such that one of the measured signals has a higher PL component relative to ambient reflectance compared to another measured signal, enabling the PL component to be enhanced by a suitable differencing procedure. In other embodiments a signal from an object is measured in a spectral band selected such that at least 20% of the measured signal comprises PL generated from the object by the solar irradiation. The methods and apparatus have particular application to outdoor inspection of photovoltaic modules without having to modulate the operating point of the modules.
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International Classification(s)
- 2021 Application Filing Year
- G01N Class
- 11893 Applications Filed
- 4411 Patents Issued To-Date
- 37.09 % Issued To-Date
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- G01N Class
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