ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE

  • US 20090091253A1
  • Filed: 03/13/2007
  • Published: 04/09/2009
  • Est. Priority Date: 03/17/2006
  • Status: Abandoned Application
First Claim
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1. An organic electroluminescent element comprising a substrate having thereon electrodes and at least one organic layer,wherein at least one organic layer is a light-emitting layer incorporating a host compound and a phosphorescent compound, the host compound has a HOMO level of −

  • 7.20 to −

    5.42 eV and a LUMO level of −

    2.30 to −

    0.50 eV, and the phosphorescent compound is represented by Formula (1),

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