October 6, 1997
Lawrence Berkeley National Laboratory
Berkeley Lab researcher Scott McHugo has used the Lab's Advanced Light Source to study iron, copper, and nickel impurities at dislocations in polycrystalline silicon, the basic commodity in the manufacture of commercial solar cells. McHugo suggests economical methods for reducing impurities which can lead to increased solar cell efficiency and profitability.
BERKELEY, CA. -- Common manufacturing methods produce solar cells with an efficiency of 12 to 15 percent in converting sunlight to electricity; to make a profit, 14 percent is the bare minimum. In work done at the Ernest Orlando Lawrence Berkeley National Laboratory, scientist Scott McHugo has discovered important clues to the poor performance of solar cells manufactured from polycrystalline silicon.
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Lawrence Berkeley National Laboratory. "Improved Solar Cell Efficiency In The Works." ScienceDaily. ScienceDaily, 6 October 1997. <www.sciencedaily.com/releases/1997/10/971006124228.htm>.
Lawrence Berkeley National Laboratory. (1997, October 6). Improved Solar Cell Efficiency In The Works. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/1997/10/971006124228.htm
Lawrence Berkeley National Laboratory. "Improved Solar Cell Efficiency In The Works." ScienceDaily. www.sciencedaily.com/releases/1997/10/971006124228.htm (accessed April 21, 2014).