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Spectral Measurements Using Component Cells: Examinations on Measurement Precision

: Jaus, J.; Mißbach, T.; Philipps, S.P.; Siefer, G.; Bett, A.W.

Volltext urn:nbn:de:0011-n-2210887 (731 KByte PDF)
MD5 Fingerprint: 63935492ad8fc7859b0e6635668e0e29
Erstellt am: 1.5.2015

European Commission:
26th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC. Proceedings : 5th to 9th September 2011 at the CCH - Congress Centre and International Fair Hamburg in Germany
München: WIP-Renewable Energies, 2011
ISBN: 3-936338-27-2
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <26, 2011, Hamburg>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Materialien - Solarzellen und Technologie; Alternative Photovoltaik-Technologien; III V: Epitaxie Solarzellen und Bauelemente; III-V und Konzentrator-Photovoltaik; Konzentrator-Bauelemente; Hochkonzentrierende Systeme (HCPV)

In outdoor measurements, frequently one solar cell (or a set of component cells) is used to evaluate the effect of spectral changes on a PV module. For concentrator photovoltaic (CPV) power plants with multi-junction solar cells, a common method is to use component cells to study the influence of the spectral conditions on the output current of the module performance. However, quite often the spectral response of the component cells is different from the one in the subcell of the multi-junction solar cell. In such situations, the current generation in the component cell is not directly related to that of the III-V multi-junction solar cell. In this paper, we use a large set of simulated spectra based on climate data from eight different locations to evaluate the error which is induced by the difference in the spectral response between two solar cells. We also introduce an empirical mismatch function (EMF), which allows to significantly reduce the transformation errors.