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Australia has best solar cell efficiency
Sydney (UPI) Oct 23, 2008 Australian scientists at the University of New South Wales say they have become the first to achieve 25 percent efficiency in a silicon solar cell. The university's Australian Research Council Photovoltaic Center of Excellence also held the previous world record of 24.7 percent silicon solar cell efficiency. A revision of the international standard by which solar cells are measured resulted in the new record being achieved by a team led by Professors Martin Green and Stuart Wenham. Green said the jump in performance resulted from new knowledge about the composition of sunlight. "Since the weights of the colors in sunlight change during the day, solar cells are measured under a standard color spectrum defined under typical operational meteorological conditions," he said. "Improvements in understanding atmospheric effects upon the color content of sunlight led to a revision of the standard spectrum in April. The new spectrum has a higher energy content both down the blue end of the spectrum and at the opposite red end with, dare I say it, relatively less green." The researchers said the university's world-leading silicon cell is now six percent more efficient than the next-best technology. Community Email This Article Comment On This Article Share This Article With Planet Earth
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PG And E Announces 2008 Solar School And Bright Ideas Grant Winners
Sacramento CA (SPX) Oct 22, 2008As part of its continuing effort to bring solar power to the classroom, Pacific Gas and Electric Company (PG and E) has unveiled 25 California schools selected to participate in the 2008 solar schools program. Each school will receive a 1.3 kilowatt solar generation system, valued at $25,000. |
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