4 FAQs about Micro photovoltaic panels for weak light power generation

Could micro-CPV make solar power more attractive?

The micro-CPV development could lead to commercially available panels that cost less to build yet produce more energy, which would make solar power even more attractive as an alternative to other sources. The Fraunhofer ISE team is currently spinning out a company, Clearsun Energy, to bring this technology to market.

How do micro-CPV solar panels work?

The chips use five-junction solar cells, which use multiple layers to capture the energy from different wavelengths of sunlight. The prototype micro-CPV solar panel uses a matrix of cells to create an industry-standard 24-by-18 inch panel (61 by 45.7 centimeters) with an aperture area greater than 2,000 square centimeters. Fraunhofer ISE

How much semiconductor material does a photovoltaic system use?

The researchers estimate that their design uses less than one-thousandth the expensive semiconductor materials required by standard panels. They describe their work in a recent paper published in the IEEE Journal of Photovoltaics. The system relies on planoconvex lenses to focus sunlight.

Can a solar panel convert solar energy more efficiently?

Researchers at Fraunhofer ISE have developed a solar panel prototype that concentrates solar energy more effectively than traditional panels do, to deliver 36 percent conversion efficiency. The sun's energy can be increased when focused on a smaller area—just ask any kid who has burned holes in a sheet of paper with a magnifying glass.

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