| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a long life phosphorescent organic electroluminescent element. <P>SOLUTION: In the organic electroluminescent element having a plurality of organic thin film layers including a luminous layer between a positive electrode and a negative electrode, the luminous layer contains a 3,4'-biscarbazole derivative, and at least one organic thin film layer interposed between the positive electrode and the luminous layer contains a compound having two diaryl amino substituent groups or a triarylamine compound. <P>COPYRIGHT: (C)2013,JPO&INPIT |
