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GRADED DIELECTRIC LAYER

  • US 20080224157A1
  • Filed: 03/13/2007
  • Published: 09/18/2008
  • Est. Priority Date: 03/13/2007
  • Status: Active Grant
First Claim
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1. An optoelectronic device comprising:

  • a semiconductor material;

    a dielectric layer disposed over or adjacent to the semiconductor material; and

    a surrounding medium disposed adjacent to the dielectric layer;

    wherein the dielectric layer has a composition that varies with depth, providing an index of refraction that is graded from a first value at a depth closer to the semiconductor material to a second value at a depth closer to the surrounding medium, and the second value is different from the first value.

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