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Highest efficiency multi-junction solar cell for terrestrial and space applications

 
: Bett, A.W.; Dimroth, F.; Guter, W.; Hoheisel, R.; Oliva, E.; Philipps, S.P.; Schöne, J.; Siefer, G.; Steiner, M.; Wekkeli, A.; Welser, E.; Meusel, M.; Köstler, W.; Strobl, G.

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Sinke, W. ; WIP - Renewable Energies, München; European Commission; UNESCO; World Council for Renewable Energy; International Photovoltaic Equipment Association:
24th European Photovoltaic Solar Energy Conference 2009. CD-ROM : The compiled State-of-the-Art of PV Solar Technology and Deployment. Proceedings of the International Conference held in Hamburg, 21-25 September 2009
München, 2009
ISBN: 3-936338-25-6
pp.1-6
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <24, 2009, Hamburg>
English
Conference Paper
Fraunhofer ISE ()

Abstract
This paper gives a review of the research efforts at Fraunhofer ISE and the industrialization status at AZUR SPACE Solar Power in respect to III-V-based triple-junction solar cells. These cells are used in space environment and in terrestrial concentrator systems. AZUR space cells based on the lattice-matched concept have reached efficiencies of up to 30.6 %. Furthermore, they exhibit exceptional radiation hardness. EOL efficiencies of up to 25.8 % after irradiation with 1 x 1015 1 MeV electrons/cm² have been reached. In regard to terrestrial application in concentrator systems Fraunhofer ISE has developed metamorphic triple-junction solar cells reaching an efficiency of 41.1 % at 454 suns. The development of a suitable buffer and tunnel diode structure for the metamorphic growth approach is discussed in this paper.

: http://publica.fraunhofer.de/documents/N-142770.html