Technology update
Aug 1, 2008
Silicon nanowires boost solar cells
Solar cells made from silicon nanowires could give "classic" silicon-based photovoltaics or other types of solid-state solar cells a run for their money, say researchers at the City University of Hong Kong. Shuit-Tong Lee and colleagues have succeeded in producing silicon nanowire array photoelectrochemical solar cells that show more efficient light absorption per unit device and thus higher light conversion efficiency at a lower cost than conventional silicon-based cells. The way that the new arrays were prepared also means they could easily be scaled up for large-area applications.
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