Organic electroluminescent device and organic...

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

Reexamination Certificate

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C313S506000

Reexamination Certificate

active

07906901

ABSTRACT:
An organic EL device having excellent light-emitting properties, particularly a long lifetime, by controlling a balance between a hole and an electron, which is required for light-emitting in the organic EL device, includes a structure in which an anode, an organic layer including a light-emitting layer, and a cathode are stacked on a substrate in this order, wherein the light-emitting layer includes two or more different light-emitting materials, and a difference in photoluminescence peak wavelength between the two or more different light-emitting materials is about 50 nm or less.

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Official Communication issued in International Patent Application No. PCT/JP2006/321533, mailed on Dec. 19, 2006.
Cao et al., “Ultrathin Layer Alkaline Earth Metals as Stable Electron-Injecting Electrodes for Polymer Light Emitting Diodes,” Journal of Applied Physics, Sep. 15, 2000, vol. 88 No. 6, pp. 3618-3623.

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