To provide an organic electroluminescent element having excellent luminous efficiency.
This organic electroluminescent element includes at least one organic compound layer including a luminescent layer between a pair of electrodes. The organic electroluminescent element contains a fluorescent compound which emits fluorescent light upon the application of a voltage, wherein light emission upon the application of the voltage is mainly derived from the fluorescent compound; and the element further contains a compound (herein after called an amplifying agent) having a function of increasing the number of singlet excitons formed upon the application of the voltage thereby amplifying luminescent intensity upon the application of the voltage. In the organic electroluminescent element, the fluorescent compound has a substituted group capable of decreasing the efficiency of Dexter energy transfer from a triplet exciton of the amplifying agent to a triplet exciton of the fluorescent compound.
ISE TOSHIHIRO
| JP2003151773A | 2003-05-23 | |||
| JP2003520391A | 2003-07-02 | |||
| JP2001520450A | 2001-10-30 | |||
| JP2004510298A | 2004-04-02 |
| WO2002026856A1 | 2002-04-04 |
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda