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Light emitting element and light emitting device

  • US 8,344,621 B2
  • Filed: 05/05/2011
  • Issued: 01/01/2013
  • Est. Priority Date: 05/21/2004
  • Status: Active Grant
First Claim
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1. A lighting appliance comprising:

  • an anode;

    a first light-emitting layer over the anode;

    a first layer over the first light-emitting layer, the first layer comprising an electron-transporting material as a first substance and an electron donating material as a second substance with respect to the electron-transporting material;

    a second layer over and in contact with the first layer, the second layer comprising molybdenum oxide;

    a second light-emitting layer over the second layer; and

    a cathode over the second layer.

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