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HIGH SPEED SURFACE PLASMON COUPLED LIGHT EMITTING DIODES

  • US 20160087143A1
  • Filed: 04/28/2014
  • Published: 03/24/2016
  • Est. Priority Date: 04/26/2013
  • Status: Active Grant
First Claim
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1. A light emitting diode device (LED) comprising:

  • a first-doped layer on a substrate;

    an active layer on the first-doped layer;

    a second-doped layer on the active layer; and

    a metal layer on the second-doped layer,wherein the second-doped layer is patterned on a surface opposite to the active layer to define a first portion and a second portion, andwherein the first portion of the second-doped layer has a first portion thickness constrained for electron-hole pairs in the active layer to couple efficiently to a surface plasmon mode at an interface of the metal layer and the second-doped layer thereby increasing the spontaneous emission rate of the LED, andwherein the second portion of the second-doped layer has a second portion thickness sufficient to ensure formation of a p-n junction in the LED.

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