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Efficient Semipolar Blue LEDs Created on Freestanding Substrate

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Michael A. Greenwood

Blue LEDs with high quantum efficiency and significantly reduced polarization-related internal electric fields have been successfully fabricated on freestanding semipolar substrates by researchers at the University of California, Santa Barbara. An LED chip fabricated on a semipolar substrate is packaged on a silver header and under direct current of 20 mA. Courtesy of the University of California, Santa Barbara. Although multiquantum-well LEDs have been grown along various semipolar orientations before, their output power has been compromised. To improve performance, the...Read full article

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    Published: August 2007
    ConsumerFeatureshigh quantum efficiencyindustrialreduced polarization-related internal electric fieldsLEDs

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