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

M Rattier, Thomas Fraser Krauss, H Benisty, C Weisbuch, C Smith, R Houdre, U Oesterle

Research output: Other contribution

25 Citations (Scopus)

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.

Original languageEnglish
Volume34
Publication statusPublished - Jan 2002

Keywords

  • high-efficiency light-emitting diodes
  • photonic crystals
  • EXTERNAL QUANTUM EFFICIENCY
  • BAND-STRUCTURE
  • EMISSION

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