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IBM announced it has built a solar cell -- where the key layer that absorbs most of the light for conversion into electricity, is made entirely of readily-available elements -- that set a new world record for efficiency and holds potential for enabling solar cell technology to produce more energy at a lower cost. Comprised of copper (Cu), tin (Sn), zinc (Zn), sulfur (S), and/or selenium (Se), the cell's power conversion demonstrates an efficiency of 9.6 percent -- 40 percent higher than the value previously attained for this set of materials.

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"On Friday the California Public Utilities Commission approved a new 500 Kilovolt transmission line from desert areas deep in southeastern California where numerous solar projects have been signed, to urban centers on the coast."

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Suniva, the only U.S. manufacturer of high-power monocrystalline silicon solar cells, today announced that its ARTisun series solar cells are achieving conversion efficiencies of more than 18% in production, a record for screen- printed cells in regular full-scale production.

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IBM and researchers from Harvard University are launching a new World Community Grid project to discover organic materials to create a more efficient and lower cost solar cell. The path-breaking effort will use idle computer power from volunteers to create large supplies of new clean energy.

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William Yuan’s bright idea to create a new, more efficient solar cell earned him top honors as Oregon’s only 2008 Davidson Fellow.

As part of the honor, the 12-year-old Bethany boy will be flown to Washington, D.C., for a reception Sept. 24 at the Library of Congress where he will receive his award and a $25,000 scholarship from the Davidson Institute for Talent Development.

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United Solar Ovonic of Auburn Hills, MI, has teamed with a major roofing company to create a metal roof system that generates electricity from sunlight. The partnership offers seven different prefabricated systems, ranging in capacity from 3 to 120 kilowatts. Tests show that the solar roof panels are rugged and can withstand winds in excess of 160 miles per hour.

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A fiber-based organic photovoltaic may form the building block of cost- effective, energy-harvesting textiles.

This could be an interesting technology if it can scale.

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In his darkened lab at MIT, Marc Baldo shines an ultraviolet lamp on a solar concentrator, a device that gathers diffuse light and focuses it onto a relatively small solar cell. Solar concentrators can lower the overall cost of solar power by making it possible to use much smaller cells. But the concentrators are typically made of curved mirrors or lenses, which are bulky and require costly mechanical systems that help them track the sun.

Unlike the mirrors and lenses in conventional solar concentrators, Baldo's glass sheets act as waveguides, channeling light in the same way that fiber-optic cables transmit optical signals over long distances. The dyes coating the surfaces of the glass absorb sunlight; different dyes can be used to absorb different wavelengths of light. Then the dyes reëmit the light into the glass, which channels it to the edges. Solar-cell strips attached to the edges absorb the light and generate electricity. The larger the surface of the glass compared with the thickness of the edges, the more the light is concentrated and, to a point, the less the power costs.

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