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Black Silicon Boosts Solar Cell Efficiency

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HELSINKI, Feb. 7, 2013 — Black silicon surfaces on solar cells can elevate their efficiency to new levels, research out of Finland reports. Black silicon, with a surface reflectance of below 1 percent, has long been an attractive material for use in photovoltaic and other photonic applications. However, black silicon (b-Si) has poor charge carrier transport properties and increased surface recombination, resulting in poor spectral response, most notably at short wavelengths. Black silicon surfaces on solar cells can elevate the efficiency to new levels, research at Aalto University has found. Courtesy of...Read full article

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    Published: February 2013
    Glossary
    spectral response
    Measure of a detector's signal during exposure to radiation of a constant power level and varying wavelength.
    Aalto Universityb-SiBasic Scienceblack siliconenergyEuropeFinlandFraunhofer Institute for Solar Energy Systems ISEGermanygreen photonicsPäivikki RepophotovoltaicsResearch & Technologysilicon nanostructuressolar cell efficiencysolar cellsspectral responsesurface passivation

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