Electroluminescent material
First Claim
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1. An electroluminescent device comprising:
- a transparent substrate, and a layer comprising an electroluminescent material above the substrate wherein the electroluminescent material comprises at least one complex selected from the group consisting of a rare earth metal complex, an actinide complex and a transition metal complex wherein the electroluminescent device has a photoluminescent efficiency of greater than 25%, the complex having the formula X(Ym)n where X is a rare earth metal, actinide or transition metal and n is the valence state of the metal, and Ym is the same or different ligand wherein at least one Ym is where R is the same or different and is selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, fluorine, nitrile, fluorocarbon, phenyl, substituted phenyl and a phenoxy moiety, and wherein each phenyl group has from 1 to 5 R substituents.
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Abstract
Electrolumiinescent devices with a high photoluminescent efficiency comprise a transparent conductive substrate on which is a layer of an electroluminescent material. The electroluminescent material is a rare earth metal, actinde or transition metal organic complex which has a photoluminescent efficiency of greater than 25%.
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Citations
13 Claims
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1. An electroluminescent device comprising:
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a transparent substrate, and a layer comprising an electroluminescent material above the substrate wherein the electroluminescent material comprises at least one complex selected from the group consisting of a rare earth metal complex, an actinide complex and a transition metal complex wherein the electroluminescent device has a photoluminescent efficiency of greater than 25%, the complex having the formula X(Ym)n where X is a rare earth metal, actinide or transition metal and n is the valence state of the metal, and Ym is the same or different ligand wherein at least one Ym is where R is the same or different and is selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, fluorine, nitrile, fluorocarbon, phenyl, substituted phenyl and a phenoxy moiety, and wherein each phenyl group has from 1 to 5 R substituents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification