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Novelty for higher power output

HeliosHelios in back light

The images show part of the solar array of Helios, France '98. Even taking the picture against the sun doesn't show any reflections on the module surface.

Our latest innovation - the result of 6 years development - are non reflective solar modules. Due to a micro structured surface we increased the power output by about 4 % compared to standard module surface. in 1997, first presentation of this technology was a world record module with an efficiency of 22.7 % in a cooperation with Martin Green, using his cells. Further projects using this technology are solar arrays for WSC'99 race cars Helios, Polytechnicum Lille, France and Yumekobo, Kanazawa Institute of Technology, Japan.
 

Technical details

Due to a refractive index of about 1.5 the reflection on a standard module surface is about 4 % for vertical light. For angles less than 45° this value increases to 50 % and higher. Our new module surface gives a reflection of only 0.25 % for vertical light and increases to only 4 %, even at flat angles. As more light is absorbed, the power output increases.
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