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1991
Conference Paper
Titel
Measurement of multi-junction solar cells
Alternative
Messung von Mehrfach-Solarzellen
Abstract
In this paper, first the different measurement techniques for the I-V parameters of multi-junction solar cells are analyzed and arranged in categories. Some of the methods which have been deduced from single junction measurements become iterative which causes new problems. We then discuss the uncertainties in the short circuit current. Finally we present our approach for multi-junction measurement, an improved reference cell method which takes into account the coupling of the spectral mismatch factors of the subcells, and we show the present state of our equipment.