DocumentCode :
3557617
Title :
3-6 junction photovoltaic cells for space and terrestrial concentrator applications
Author :
Dimroth, F. ; Baur, C. ; Bett, Andreas W. ; Meusel, M. ; Strobl, G.
Author_Institution :
Fraunhofer-Inst. fur Solare Energiesysteme, Freiburg, Germany
fYear :
2005
fDate :
3-7 Jan. 2005
Firstpage :
525
Lastpage :
529
Abstract :
Multi-junction solar cells made from III-V compound semiconductors are the highest efficient photovoltaic devices today. Different solar cell structures have been developed for space as well as terrestrial concentrator applications in a close collaboration between the Fraunhofer ISE and RWE-SSP in Germany. Efficiencies up to 29.1% (AM0) have been recently achieved for a 30.2 cm2 GaInP/GaInAs/Ge device at RWE-SSP. Triple-junction solar cells with remaining factors up to 88 % after irradiation with 1 MeV electrons at a fluence of 1015 cm-2 have been demonstrated at Fraunhofer ISE. Multi-junction solar cells with 5 and even 6 junctions for even higher radiation hardness are under development. On the other hand lattice mismatched triple-junction solar cells are an excellent solution for terrestrial concentrator applications. Efficiencies up to 35.2 % at a concentration ratio of 443-637 (AM1.5d, low AOD) have been obtained.
Keywords :
III-V semiconductors; electron beam effects; gallium arsenide; gallium compounds; germanium; indium compounds; radiation hardening (electronics); semiconductor heterojunctions; solar cells; space power generation; 29.1 percent; 3-6 junction photovoltaic cells; 35.2 percent; GaInP-GaInAs-Ge; GaInP/GaInAs/Ge device; III-V compound semiconductors; concentration ratio; fluence; lattice mismatched triple-junction solar cells; multijunction solar cells; radiation hardness; space concentrator applications; terrestrial concentrator applications; Belts; Collaboration; Electrons; Europe; Lattices; Photovoltaic cells; Photovoltaic systems; Satellites; Solar energy; Solar power generation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialists Conference, 2005. Conference Record of the Thirty-first IEEE
ISSN :
0160-8371
Print_ISBN :
0-7803-8707-4
Type :
conf
DOI :
10.1109/PVSC.2005.1488185
Filename :
1488185
Link To Document :
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