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Nanoscale SiLEDs Emit Multiple Colors

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KARLSRUHE, Germany, Feb. 22, 2013 — Highly efficient LEDs composed of silicon nanocrystals but without heavy metals can now emit light in a variety of colors. Silicon dominates in the microelectronics and photovoltaics industries but has long been considered unsuitable for LEDs. For nanoscopic dimensions, however, this argument proves invalid. Minute silicon nanocrystals, which consist of only a few hundred to a thousand atoms, can produce light and hold potential as highly efficient light emitters. In a joint project, scientists from Karlsruhe Institute of Technology (KIT) and the University of Toronto in Canada...Read full article

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