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Black Silicon Solar Cell Efficiency Jumps to 22.1%

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ESPOO, Finland, June 5, 2015 — With a newly certified 22.1 percent efficiency rating and wider angular acceptance than other materials, "black silicon" solar cells may now be ready for prime time. Researchers from Aalto University in Finland and the Polytechnic University of Catalonia in Spain achieved the new record by applying a thin, passivating film of conformal alumina to nanostructured silicon via atomic layer deposition. The new cells also integrate all metal contacts on the back side of the cell. The new efficiency record, which represents a nearly 4 percent increase over earlier black silicon solar...Read full article

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