| 摘要 |
PURPOSE:To enable long life of EL element by providing an organic EL layer with a structural formula of Al(C9H6ON)3, containing a compound showing specified absorbing peaks in a far inflared radiation absorbing spectra. CONSTITUTION:On a glass base, ITO electrode 2, hall transport layer 3, EL layer 4 and Mg-Al electrode 5 are formed in suquence, and a power supply 6 is connected between the electrodes 2, 5. The organic EL layer 4 is provided with a structural formula of Al(C9H6ON)3 and in a range 400-440cm<-1> in far inflared radiation absorbing spectra a compound showing two or more absorbing peas within an intencity ratio 1:1:5, i.e., isomer of alumioxyquinolinic complex is contained. It is thus possible to extend the service life of EL element. |
