| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a long lifetime organic electroluminescent element emitting blue phosphorescence. <P>SOLUTION: The organic electroluminescent element comprises an electrode and one or more organic layers on a substrate. At least one of the organic layers is a luminescent layer containing a host compound and a phosphorescent compound. The host compound has the HOMO at -5.42 to -3.50 eV and the LUMO at -1.20 to +0.00 eV. The phosphorescent compound has the HOMO at -5.15 to -3.50 eV and the LUMO at -1.25 to +1.00 eV. The phosphorescent compound is represented by the specified general formula (1). <P>COPYRIGHT: (C)2013,JPO&INPIT |
