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MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE, AND ORGANIC ELECTROLUMINESCENCE DEVICE

  • US 20120181528A1
  • Filed: 09/24/2010
  • Published: 07/19/2012
  • Est. Priority Date: 09/30/2009
  • Status: Active Grant
First Claim
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1. A material for an organic electroluminescence device comprising at least a phosphorescent metal complex A and a phosphorescent metal complex B, wherein the phosphorescent metal complex A comprises a partial structure represented by the following formula (1), and the phosphorescent metal complex B has the same structure with the phosphorescent metal complex A except that, in at least one substituent of R1 and R2 in the formula (1), one or more atoms directly bonding to Q1 or Q2 are substituted with an atom belonging to the same group as in the one or more atoms and having a greater atomic weight than the one or more atoms, and a ratio of the content of the phosphorescent metal complex B to a content of the phosphorescent metal complex A is 0.005% by mass or more and 2% by mass or less:

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