Stability OLED materials and devices

Details Stability OLED materials and devices Stability OLED materials and devices

2011-03-08

2011-03-08

Yamnitzky, Marie R. (Department: 1786)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S101000, C313S504000, C428S917000, C257SE51044

Reexamination Certificate

active

07902374

ABSTRACT:
Organic light emitting materials and devices comprising phosphorescent metal complexes comprising ligands comprising aryl or heteroaryl groups substituted at both ortho positions are described. An organic light emitting device, comprising: an anode; a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; an electron transport layer; and a cathode disposed, in that order, over a substrate.

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