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Organic electroluminescent device

  • US 20070090753A1
  • Filed: 03/15/2005
  • Published: 04/26/2007
  • Est. Priority Date: 03/25/2004
  • Status: Active Grant
First Claim
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1. An organic electroluminescent device comprising in sequence an anode, a first emitting layer, a carrier barrier layer, a second emitting layer and a cathode stacked;

  • wherein the ionization potential of the carrier barrier layer is more than the ionization potential of the first emitting layer by 0.1 eV or more and the affinity level of the carrier barrier layer is less than the affinity levels of the first emitting layer and the second emitting layer by 0.1 eV or more.

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