393841-81-1Relevant articles and documents
Organic electroluminescent compound and organic electroluminescent device containing same
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Paragraph 0149; 0150; 0152-0154, (2021/06/26)
The invention discloses an organic electroluminescent compound, which is formed by connecting a structural formula (1) and a structural formula (2), wherein * is a connecting site, the structural formula (1) and the structural formula (2) are defined in the specification, Y is O or S, X1-X8 are independently C-R5 or N, Z1-Z4 are independently C-R6 or N, the structural formula (1) can be connected with any non-N connecting site in Z1-Z4 on the A ring of the structural formula (2), and Ar is a substituted or unsubstituted C6-C60 aromatic hydrocarbon group or a substituted or unsubstituted C5-C60 heteroaromatic hydrocarbon group. When the organic electroluminescent compound is applied to the organic electroluminescent device, under the same current density, the luminous efficiency is greatly improved, the color purity is high, the starting voltage of the device is reduced, the power consumption of the device is relatively reduced, and the service life of the device is correspondingly prolonged.
SOLUTION PROCESSED ORGANOMETALLIC COMPLEXES AND THEIR USE IN ELECTROLUMINESCENT DEVICES
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Page/Page column 38-39; Sheet 13, (2008/06/13)
The invention provides phosphorescent organometallic complexes. The complexes of the invention may be prepared as films further comprising a charge carrying host material may be used at an emissive layer in organic light emitting devices. In one embodiment, the complex is a hyper-branched organoiridium complex comprising a 2-phenylpuridine ligand wherein the phenyl ring or the pyridine ring contains 4 non-hydrogen substituents. In another embodiment, the complex is an organoiridium complex comprising a substituted 2-phenyl pyridine ligand, wherein at least one substituent contains a spiro group.