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LIGHT EMITTING DIODE WITH LOW REFRACTIVE INDEX MATERIAL LAYERS TO REDUCE LIGHT GUIDING EFFECTS

  • US 20160172556A1
  • Filed: 02/23/2016
  • Published: 06/16/2016
  • Est. Priority Date: 03/06/2012
  • Status: Active Grant
First Claim
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1. A light-emitting diode (LED) for emitting emitted light having a particular wavelength, said LED comprising:

  • at least one n-doped layer;

    at least one p-doped layer;

    an active region comprising at least one layer of light-emitting material disposed between said at least one n-doped layer and said at least one p-doped layer, said active region having an average refractive index, calculated by averaging the refractive index across the thickness of said active region; and

    at least one low refractive index layer disposed within said particular wavelength of said active region, said at least one low refractive index layer having a refractive index below said average refractive index and a thickness sufficient to limit light being emitted into a guided mode of said active region to no more than 10% of said emitted light.

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