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In conventional light-emitting diodes (LED’s), the external efficiency is limited by total internal reflection at the semiconductor-air interface. An LED with a textured top surface can increase the light-extraction efficiency. This paper reports a new method to fabricate AlGaInP-based nanorod light emitting diodes (LEDs) by using self-assemble metal layer nano-masks and inductively coupled plasma (ICP). Light power measurements indicates that the scattering of photons considerably enhance the probability of escaping from the nanorod LEDs. The light-intensity of the nanorod LED is increased by 34% for a thin GaP window layer, and by 17% for 8 μm GaP window layer. The light power of the nanorod LED is increased by 25% and 13%, respectively. 相似文献
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