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Relocating LEDs Enhances Efficiency

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GUANGZHOU, China, June 14, 2012 — Gallium nitride (GaN) LEDs grown on a layer of silicon were successfully transferred to a layer of copper, enhancing efficiency by 122 percent, say Chinese researchers. The new copper substrate from Sun Yat-sen University enabled the GaN crystals to release some of the internal stresses...Read full article

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