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30 Sep 2008 05:09:27

Most efficient solar panel devised

Most efficient solar panel devised
The most efficient solar cell has been developed by scientists in Germany.

Researchers at the Fraunhofer Institute for Solar Energy Systems (ISE) in Freiburg have broken their own old record for efficiency at converting solar energy into electricity.

The team achieved 39.7 per cent efficiency, a record, which they achieved with a III-V semiconductor multi-junction solar cell.

Achieving a balance between the size of the wire, which transmits electricity, and the size of the solar panel surface which converts sun light into electricity, is one of the essential tasks of solar panel designers.

The team has been working to devise the optimal contact structures.

"We are very pleased to have advanced a further decisive step in such a short amount of time," said Dr Andreas Bett, department head at Fraunhofer ISE. "Highest conversion efficiencies help the young technology to become market competitive and to further sink the costs of generating electricity from the sun for the future."

The Vatican has recently installed solar panels for the first time, with the Paul VI auditorium, where the Pope delivers his weekly addresses if it rains, having 2,700 panels fitted.



Discussion Thread  

04 Oct 2008

The Germans are making a claim that is not true.  The University of Delaware, working with DuPont has developed a solar cell that is over 42% efficient (beats 39.7%) - you can see article at:


Since then a kid (12 years old) has gone them one better and developed a radically new solar cell, which creates electricity at all wave lengths of light - presented a prototype for a science fair project.

This arena is fast becoming exciting - I'm working the solar saturation angle myself and hope to knock off both the Germans and DuPont for highest efficiency within a couple of months.  I've gotten some amazing results, but have to stablize the process before showing the media.  Showing 1 AMP of output from a 500mA solar cell is exciting, but it has to be constant and repeatable before any demonstrations are attempted.



Discussion Thread  


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