Organic light-emitting device with light transmissive anode and

Details Organic light-emitting device with light transmissive anode and Organic light-emitting device with light transmissive anode and

1997-10-24

1999-10-19

O'Shea, Sandra

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313503, 313506, H01J 162

Patent

active

059694742

ABSTRACT:
An organic EL light emitting device has a light emitting layer between a cathode and an anode. Both the cathode and the anode are light transmissive. The cathode includes a conductor layer of a metal or alloy with a work function of up to 4 eV having a thickness of up to 10 nm on the light emitting layer side, a transparent electrode of zinc-doped indium oxide on a side remote from the light emitting layer, and optionally a buffer layer between the conductor layer and the transparent electrode. Light emission can exit from the device on both the cathode and anode sides.

REFERENCES:
patent: 4099091 (1978-07-01), Yamazoe et al.
patent: 5729087 (1998-03-01), Chien
patent: 5747930 (1998-05-01), Utsugi

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