Abstract
The use of photonic crystals (PCs) for realistic light emitting diodes (LEDs) is discussed, given the constraints of planar semiconductor technology. A viable route for the fabrication of high-efficiency high-brightness electrically injected LEDs is presented. The starting point is a top-emitting microcavity using a single Alox Bragg mirror. The active area is surrounded by two-dimensional PCs, namely arrays of air rods etched through the top layers; injection of the electrons is achieved through the crystals. Design rules for PCs as efficient out-couplers are detailed. The building blocks are assessed experimentally, and we show that promising results are at hand.
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Rattier, M., Krauss, T.F., Carlin, JF. et al. High extraction efficiency, laterally injected, light emitting diodes combining microcavities and photonic crystals. Optical and Quantum Electronics 34, 79–89 (2002). https://doi.org/10.1023/A:1013359500596
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DOI: https://doi.org/10.1023/A:1013359500596