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Fraunhofer ISE touts new solar cell efficiency record

Posted: 01 Oct 2008 ?? ?Print Version ?Bookmark and Share

Keywords:solar cell? efficiency record European? power station?

Researchers at the Fraunhofer Institute for Solar Energy Systems (ISE) in Freiburg, Germany have claimed a European efficiency record of 39.7 percent for a III-V semiconductor multi-junction solar cell.

The researchers surpassed the previous record which was 37.6 percent for a multi-junction solar cell used in photovoltaic concentrator technology for solar power stations.

In the past two years Fraunhofer ISE has been working on the theoretical calculation of optimal contact structures and as a result of this work, sponsored by the EU Project Fullspectrum (SES6-CT-2003-502620), the new record breaking solar cells were developed.

The cells are suitable for inhomogeneous radiation applications that occur when there is concentrated sunlight. The solar cells are installed in the concentrator modules at Fraunhofer ISE and its spin-off company Concentrix Solar GmbH.

Frank Dimroth, head of the III-V Epitaxy and Solar Cells Group at Fraunhofer ISE said, "We have improved the contact structures of our solar cells. As a result, using the same semiconductor structures, we now achieve the higher efficiency when converting sunlight into electricity."

- Paul Buckley
Power Management DesignLine Europe

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