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Development of III-V-based concentrator solar cells and their application in PV-modules

: Bett, A.W.; Dimroth, F.; Hein, M.; Lange, G.; Meusel, M.; Schubert, U.; Siefer, G.


IEEE Electron Devices Society:
29th IEEE Photovoltaic Specialists Conference 2002. Proceedings : May 20-24, 2002 Hyatt Regency New Orleans New Orleans, Louisiana
New York, NY: IEEE, 2002
ISBN: 0-7803-7471-1
Photovoltaic Specialists Conference <29, 2002, New Orleans/La.>
Fraunhofer ISE ()

Concentrators have a great potential to achieve cost reduction for solar generated electricity. In this work III-V-based concentrator solar cells for high concentration levels were fabricated. Monolithic and mechanically stacked multi-junction cells were investigated achieving efficiencies up to 33.5% at C=308 (AM1.5d, 1000W/m2, 25°C). The cells are employed in point-focus Fresnel lens modules. All-glass hermetized modules designed for a concentration level of 120 and 500 obtained efficiencies of up to 24.8% and 21.7%, respectively. The modules were characterized under outdoor conditions at Freiburg, Germany.