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Hydrogen production in a PV concentrator using III-V multi-junction solar cells

 
: Dimroth, F.; Peharz, G.; Wittstadt, U.; Hacker, B.; Bett, A.W.

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IEEE Electron Devices Society:
IEEE 4th World Conference on Photovoltaic Energy Conversion 2006. Vol.1 : Waikoloa, Hawaii, 7 - 12 May 2006
Piscataway, NJ: IEEE Operations Center, 2006
ISBN: 1-4244-0017-1 (Print)
ISBN: 1-4244-0016-3 (Online)
S.640-643
World Conference on Photovoltaic Energy Conversion (WCPEC) <4, 2006, Waikoloa/Hawaii>
Englisch
Konferenzbeitrag
Fraunhofer ISE ()

Abstract
Multi-junction solar cells from III-V compound semiconductors can generate ideal voltages for the electrolysis of water. This paper presents results of a PV-concentrator HyConreg with Ga0.35In0.65P/Ga0.83In0.17As tandem solar cells which are directly connected to the electrodes of a local polymer electrolyte membrane electrolyser. This electrolyser is integrated into the base plate of a concentrator module. A prototype system with an area of 96 cm2 has been realized. The solar to hydrogen conversion efficiency of this system was measured outdoor in Freiburg to be 18.2% (based on the thermoneutral voltage of 1.485 V).

: http://publica.fraunhofer.de/dokumente/N-87483.html