Electroluminescent devices
AssigneeXerox Corporation
InventorsNan-Xing Hu, Hany Aziz, Zoran D. Popovic, Ah-Mee Hor
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Abstract
An electroluminescent device including a first electrode, a second electrode, and situated between the electrodes a carbazole layer of the formula wherein R1, R2, R3, and R4 are independently selected from the group consisting of a hydrocarbyl, and wherein Ar is an aryl.
Claims38
An electroluminescent device comprised of an anode, a cathode, and situated between the anode and the cathode a carbazole layer of the formula
- wherein R1, R2, R3, and R4 are independently selected from the group consisting of a hydrocarbyl, and wherein Ar is an aryl.
An electroluminescent device comprised of a first electrode, a second electrode, and an organic layer containing a carbazole compound illustrated by the formula
- wherein Ar1, Ar2, Ar3, and Ar4 are each an aryl group with from about 6 to about 24 carbons.
An electroluminescent device comprised in sequence of an anode, a hole transport layer, an electron transport layer, and a cathode, wherein said hole transport layer is comprised of a carbazole
- wherein R1, R2, R3, and R4 are independently selected from the group consisting of a hydrocarbyl, and wherein Ar is an aryl;
- and a
- wherein Ar1, Ar2, Ar3, and Ar4 are each an aryl group with from about 6 to about 24 carbons.
A device comprised of a first electrode, a second electrode, and a carbazole of the formula
- wherein R1, R2, R3, and R4 are independently selected from the group consisting of a hydrocarbyl, and wherein Ar is an aryl;
- and a hydrocarbyl containing a heteroatom of oxygen, sulfur, silicon, or nitrogen;
- or a heteroaromatic group containing a heteroatom of oxygen, sulfur, silicon, or nitrogen.
Dependencies are inferred from the claim text.