Infoscience

Article de journal

High extraction efficiency, laterally injected, light emitting diodes combining microcavities and photonic crystals

Rattier, M.; Krauss, T.F.; Carlin, J.F.; Stanley, R.P.; Oesterle, U.; Houdré, R.; Smith, C.J.M.; De La Rue, R.M.; Benisty, H.; Weisbuch, C.
  • Publié dans: Optical and Quantum Electronics, vol. 34, num. 1-3, p. 79-89
  • Date de publication: 2002

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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