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Toward ultrahigh-efficiency aluminum oxide microcavity light-emitting diodes: guided mode extraction by photonic crystals

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9 Author(s)
Rattier, M. ; Lab. de Phys. de la Matiere Condensee, Ecole Polytech., Palaiseau, France ; Benisty, H. ; Stanley, R.P. ; Carlin, Jean-Francois
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In this paper, we present an improved version of microcavity light-emitting diodes, relying on the use of a low-index material, aluminum oxide. Our work addresses in particular the injection scheme required by the insulating nature of this oxide. The device we fabricated demonstrated efficiencies up to 28% in air, using only planar technology. In these structures, most of the emission is guided. We further propose to include photonic crystals to extract this guided light. The design of the photonic crystals are discussed and substantiated by photoluminescence-based experiments

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:8 ,  Issue: 2 )