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ORGANIC ELECTROLUMINESCENCE DEVICE AND MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE

  • US 20090045731A1
  • Filed: 07/03/2008
  • Published: 02/19/2009
  • Est. Priority Date: 07/07/2007
  • Status: Abandoned Application
First Claim
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1. An organic electroluminescence device, comprising:

  • a cathode;

    an anode; and

    a single-layered or multilayered organic thin-film layer provided between the cathode and the anode, whereinthe organic thin-film layer comprises at least one emitting layer, andthe at least one emitting layer comprises;

    at least one phosphorescent material; and

    a host material represented by a formula (1) as follows, where;

    Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a condensed aromatic hydrocarbon ring selected from a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted chrysene ring, a substituted or unsubstituted fluoranthene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzophenanthrene ring, a substituted or unsubstituted dibenzophenanthrene ring, a substituted or unsubstituted triphenylene ring, a substituted or unsubstituted benzo[a]triphenylene ring, a substituted or unsubstituted benzochrysene ring, a substituted or unsubstituted benzo[b]fluoranthene ring and a substituted or unsubstituted picene ring; and

    p is 0 or 1.

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