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German scientists invented a new solar concentrator
- Jul 09, 2018 -

Scientists at the University of Braunschweig in Germany have developed a new type of solar concentrator that concentrates light from any direction on solar panels. Researchers say the funnel can be tuned to different wavelengths of light and stacked to convert the entire spectrum into electrical energy.

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A solar concentrator is a type of lens that concentrates sunlight on a small area. Since most solar cells are only suitable for operation in direct sunlight, they have not been widely adopted in the solar field.

But this new concentrator consists of a randomly oriented pigment that absorbs light from almost any angle of incidence and maps it to components that face in a single direction. There is only a 10% loss in the concentrating process. Experiments show that this concentrator can absorb about 99% of the incident light, and the light-redirected quantum efficiency is greater than 80%.

Scientists predict that in the future it is possible to stack concentrators of different amplitudes on each other to form a concentrator that can absorb the entire spectrum. Since these concentrators are made of inexpensive, versatile materials, they can be developed into a low cost and efficient solar cell booster.