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US 7,655,323 B2Granted
OLEDs utilizing macrocyclic ligand systems
AssigneesUniversity of Southern California, Universal Display Corporation
InventorsRobert Walters, Peter B. Mackenzie, Mark E. Thompson
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Abstract
The present invention provides organic light emitting devices (OLEDs) and materials with improved stability and efficiency when incorporated into an OLED. The materials include organometallic compounds having carbene atom/donor coordinated to a metal center. The compounds may be macrocyclic electrophosphors. The compounds may also include a macrocyclic ligand coordinated to a metal center.
Claims28
An organic light emitting device, comprising:
- (a) an anode;
- (b) a cathode;
- (c) an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound comprising one or more carbene atoms coordinated to a d8 metal;
- wherein the compound further comprises a multidentate ligand.
1 more element
An organic light emitting device, comprising:
- (a) an anode;
- (b) a cathode;
- (c) and a phosphorescent emissive region disposed between the anode and the cathode, wherein the emissive region comprises an emissive material having a structure V:
- wherein:
- M is a metal;
- W, X, Y, and Z are independently a group containing C, N, P, O, or S coordinated to the metal M;
- at least one of W, X, Y, or Z is coordinated to the metal by a carbene donor;
- L1, L2, L3, and L4 are independently a linking group;
- x can be 0 or 1.
6 more elements
An organic light emitting device, comprising:
- (a) an anode;
- (b) a cathode;
- (c) an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound comprising a metal coordinated to:
- i) one or more carbene donors;
- ii) 0-3 neutral donors;
- and
- iii) 0-3 monoanionic donors;
- wherein the total number of donors is the maximum number of ligands that may be attached to the metal, and each donor is optionally linked to one or more adjacent donors, and two or more donors are linked to form a macrocyclic ligand.
5 more elements
Dependencies are inferred from the claim text.