Composite material, light emitting element and light emitting device

  • US 8,420,227 B2
  • Filed: 03/13/2006
  • Issued: 04/16/2013
  • Est. Priority Date: 03/23/2005
  • Status: Active Grant
First Claim
Patent Images

1. A light emitting element comprising:

  • an anode;

    a layer over and in contact with the anode, the layer including a carbazole compound represented in the general formula (1) and an inorganic compound selected from tantalum oxide, molybdenum oxide, tungsten oxide, and ruthenium oxide;

    a hole transporting layer over the layer, the hole transporting layer comprising an aromatic amine compound;

    a light emitting layer over the hole transporting layer, the light emitting layer including a light emitting substance; and

    a cathode over the light emitting layer,

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