Abstract
We demonstrate a method of utilizing self-assembled nanorod array reflectorsto collect the laterally propagating guided modes from a light emitting diode(LED). We measure an enhancement factor of 12.2% and 18.4%, respectively,from the sidewall emission of GaN-based LEDs encompassed with 10 and20 µm thick nanorod array reflectors. Such enhancement is found to be omnidirectional due to abroken symmetry from a randomized distribution of the nanorod array placed along theperiphery of the LED’s mesa. These observations indicate that the use of nanorod reflectorscan efficiently redirect the propagation of the laterally guided modes to the surface normaldirection.
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