Organic electroluminescent device using hole-injectable, light-emitting material
AssigneeNEC Corporation
InventorsAtsushi Oda, Hitoshi Ishikawa, Satoru Toguchi, Yukiko Morioka
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Abstract
An organic EL device with high brightness and long lifetime, which is capable of driving at low voltage, is provided. As the material for constituting the organic EL device, a specific styryl amino group-containing diphenyl aminoarylene represented by the following general formula [1] (wherein Ar1 is a substituted or unsubstituted arylene group having 5-42 carbons, Ar2 to Ar5 each independently represents substituted or unsubstituted C6 to C20 aryl groups, at least one of which is a styrylphenyl group represented by the following general formula [2]) is used in a light-emitting zone adjacent to an anode.
Claims3
An organic electroluminescent device comprising at least an anode, an organic light-emitting zone which consists of one or more than one organic thin-film layers and a cathode as elements, wherein said organic light-emitting zone is adjacent to the anode, and a layer contacting with the anode in the light-emitting zone contains, either singly or as a mixture, a compound represented by the following formula [1]:
- wherein Ar1 represents a bivalent group consisting of an unsubstituted naphthalene skeleton, Ar2 represents a styryl-phenyl group shown by general formula [2] below, Ar3 and Ar4 each represent a substituted or unsubstituted aryl group whose carbon number is 6 through 20 that does not have a styryl substitution group, and Ar5 represents a substituted or unsubstituted aryl group whose carbon number is 6 through 20, wherein substituent groups of Ar3, Ar4 and Ar5 are an alkyl group having 1-6 carbons, an alkoxy group having 1-6 carbons, an aryl group having 6-18 carbons, an aralkyl group having 7-8 carbons, an aryloxy group having 6-18 carbons, a halogen atom, a substituted or unsubstituted amino group (excluding a diarylamino group), a hydroxyl group, a cyano group, and a nitro group, and wherein the Ar5 substituent groups also include a styryl group;
- wherein R1 to R11 each independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted amino group (excluding a diarylamino group), a hydroxyl group, a cyano group, a nitro group, an alkyl group having 1-6 carbons, an alkoxy group having 1-6 carbons, a substituted or unsubstituted aryl group having carbons and a substituted or unsubstituted aryloxy group having 6-18 carbons.
Dependencies are inferred from the claim text.