Deep ultraviolet light emitting device and method for fabricating same

  • US 8,304,756 B2
  • Filed: 10/17/2007
  • Issued: 11/06/2012
  • Est. Priority Date: 10/18/2006
  • Status: Active Grant
First Claim
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1. A light-emitting device comprises of aa. an ultraviolet light-emitting structure havingi. a first layer with a first conductivity, andii. a second layer with a second conductivity;

  • iii. an light emitting quantum well region between above said first layer and second layerb. a first electrical contact in electrical connection with said first layer;

    c. a second electrical contact in electrical connection with said second layer; and

    d. an template serving as a platform for said ultraviolet light-emitting structure, said template havingi. a first buffer layer, said buffer layer being trenched, andii. a second buffer layer being coalesced over said first buffer layer, said second buffer layer being made of AlxInyGa1-x-yN, wherein 0<

    x≦

    1, 0≦

    y≦

    1, 0<

    x+y≦

    1,whereby, when an electrical potential is applied to said first and second electrical contacts, said device emits ultraviolet light.

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