Patent ID: 8426042
Filing Date: 2013-04-23
Classification: C07F,C09K,H01L,H05B

Abstract:
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 R 1 and R 2 in the formula (1), one or more atoms directly bonding to Q 1 or Q 2 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: wherein each of R