Light emitting device and electronic appliance using the same

Details Light emitting device and electronic appliance using the same Light emitting device and electronic appliance using the same

2011-06-14

2011-06-14

Tarazano, D. Lawrencw (Department: 1786)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C257SE51008

Reexamination Certificate

active

07960038

ABSTRACT:
The light emitting element includes a first electrode and a second electrode, between which a light emitting layer, a hole transporting layer provide in contact with the light emitting layer, an electron transporting layer provided in contact with the light emitting layer, and a mixed layer provided between the electron transporting layer and the second electrode. The mixed layer includes an electron transporting substance and a substance showing an electron donating property with respect to the electron transporting substance. The light emitting layer includes an organometallic complex represented in General Formula (1) and a host. R1and R2each represent an electron-withdrawing substituent group. R3and R4each represent any of hydrogen or an alkyl group having 1 to 4 carbon atoms. L represents any of a monoanionic ligand having a beta-diketone structure, a monoanionic bidentate chelating ligand having a carboxyl group, or a monoanionic bidentate chelating ligand having a phenolic hydroxyl group.

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Zhang, G-L.; Liu Z-H.; Guo, H-Q. Acta Phys.-Chim. Sin., 2003, 19(10): 889-891.
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