Low work function metal complexes and uses thereof

Details Low work function metal complexes and uses thereof Low work function metal complexes and uses thereof

2003-08-12

2008-08-19

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C546S255000, C548S518000

Reexamination Certificate

active

07414359

ABSTRACT:
The present invention provides conductive metal-ligand coordination complexes that are useful in a variety of electronic devices. For example, such complexes are useful in organic light emitting devices composed of one or more layers of organic material between two conductors. The use of metal-ligand coordination complexes of the present invention as the cathode, replaces the more typically employed reactive metals, which function as the electron injecting contact, and provides for improved or longer-lived devices.

REFERENCES:
patent: 6140503 (2000-10-01), Lin et al.
patent: WO 2004/085450 (2004-10-01), None
Bloom et al., “Low Work Function Reduced Metal Complexes as Cathods in Organic Electroluminescent Devices,” J. Phys. Chem. B, 107, 2933-2938, 2003.
Elliott et al., “Transition-metal complex-based tunable work function conductors and their application as cathode materials in OLEDs,” Abstracts of Papers, 224th ACS National Meeting, Boston MA, Aug. 18-22, 2002. Online.

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