| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic EL element that is formed of two light emitting layers made of phosphorescent light emitting compound and has high efficiency and long service life. <P>SOLUTION: Two light emitting layers contain a phosphorescent light emitting compount represented by general formula (1), wherein R<SB>1</SB>is a substituent, Z is a non-metal atom group, n is an integer, B is C, N, O or S, M is metal of 8-10 group, X is C, N or O, L is an atom group forming a bidentate ligand, and m is an integer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
