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A new approach for the performance evaluation of solar cells under realistic reporting conditions

: Heidler, K.; Raicu, A.; Wilson, H.R.


Institute of Electrical and Electronics Engineers -IEEE-:
21st IEEE Photovoltaic Specialists Conference '90. Vol.2
New York/N.Y., 1990
ISSN: 0160-8371
Photovoltaic Specialists Conference <21, 1990, Kissimimee/Fla.>
Fraunhofer ISE ()

Usually solar cells are assessed using the efficiency at standard reporting conditions (SRC; 1000W/qm;25 degree C; AM 1,5 reference spectrum). The efficiency of a solar cell exposed to outdoor conditions differs considerably from the SRC efficiency. The objective of our work is to develop an algorithm which permits the determination of the realistic reporting conditions (RRC) efficiency of solar cells without the need for long-term outdoor measurements of the test objects. We investigated the influence of global irradiance, temperature and spectral irradiance on sample cells made of mono-Si, multi-Si and GaAs and calculated their RRC efficiencies for Freiburg (48 degree N) and the year 1986.