Title :
Toward ultrahigh-efficiency aluminum oxide microcavity light-emitting diodes: guided mode extraction by photonic crystals
Author :
Rattier, Maxime ; Benisty, Henri ; Stanley, Ross P. ; Carlin, Jean-François ; Houdré, Romuald ; Oesterle, Ursula ; Smith, Christopher J M ; Weisbuch, Claude ; Krauss, Thomas F.
Author_Institution :
Lab. de Phys. de la Matiere Condensee, Ecole Polytech., Palaiseau, France
Abstract :
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
Keywords :
III-V semiconductors; alumina; gallium arsenide; light emitting diodes; micro-optics; optical fabrication; photoluminescence; photonic band gap; 28 percent; Al2O3; guided light; guided mode extraction; injection scheme; insulating nature; low-index material; photoluminescence-based experiments; photonic crystal design; planar technology; ultrahigh-efficiency aluminum oxide microcavity light-emitting diodes; Aluminum oxide; Crystalline materials; Gratings; Insulation; Light emitting diodes; Microcavities; Optical materials; Photonic crystals; Semiconductor diodes; Space technology;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.999176
