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High light extraction efficiency light emitting diode (LED) with emitters within structured materials

  • US 7,977,694 B2
  • Filed: 11/15/2007
  • Issued: 07/12/2011
  • Est. Priority Date: 11/15/2006
  • Status: Expired due to Fees
First Claim
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1. A light emitting diode (LED), comprising:

  • a structured emitting region including one or more light emitting active layers embedded in a plurality of index modulation layers, wherein the index modulation layers are structured as a photonic crystal with the active layers embedded within the photonic crystal, the index modulation layers include a low index layer and a high index layer, the low index layer has a lower refractive index than the high index layer, and the active layer is positioned inside the lower index layer.

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