There exists a plethora of illumination sources available for solar simulators. These include xenon arc lamps, halogen lamps, various sets of LEDs, and combinations of the above. In general, the illumination sources that provide the closest match to the AM1.5g spectrum are more expensive, and therefore a cost-benefit analysis is required to determine the optimal illumination source for a given factory or laboratory. A comparison of spectral ratings is helpful in this regard but a more comprehensive way to evaluate illumination sources is to calculate how their spectral mismatch would affect the accuracy of IV measurements. This paper describes how that calculation is performed and evaluates four major illumination sources for a wide variety of silicon solar cells, all of which have a Class A spectral rating. We find that the error in the short-circuit current density due to spectral mismatch varies between 0.04% and 4.6%, where the smallest error is attained by a modified xenon arc lamp.
Spectral mismatch in modern solar simulators
2014
4 Seiten, Bilder, Tabellen, 12 Quellen
Conference paper
Storage medium
English
Spectral irradiance measurements of large solar simulators
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