Organic electroluminescent materials and devices

• US 10,461,260 B2
• Filed: 06/03/2014
• Issued: 10/29/2019
• Est. Priority Date: 06/03/2014
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Hung, Yi-Tza, Wong, Ken-Tsung, Kwong, Raymond, Xia, Chuanjun
• Primary Examiner(s): Everhart, Caridad
• Application Number:
  US14/294,336
• Publication Number:
  US 20150349273A1
• Time in Patent Office: 1,974 Days
• Field of Search: 257258
• CPC Class Codes: C07D 401/14 containing three or more hetero rings
• CPC Class Codes: C07D 403/04 directly linked by a ring-member-to-ring-member bond
• CPC Class Codes: C07D 403/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: C07D 403/14 containing three or more hetero rings
• CPC Class Codes: C07D 405/14 containing three or more hetero rings
• CPC Class Codes: C07D 409/14 containing three or more hetero rings
• CPC Class Codes: C07D 487/06 Peri-condensed systems
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 2101/20 Delayed fluorescence emission
• CPC Class Codes: H10K 2101/27 Combination of fluorescent and phosphorescent emission
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 85/636 comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/654 comprising only nitrogen as heteroatom H10K85/652 takes precedence
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6574 comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

A luminescent materials including donor-acceptor compounds with a nitrogen containing donor connected to the 1-position of a carbazole and triazene acceptor connected at the 9-position is disclosed.

Claims

1. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:

an anode;

a cathode; and

an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1;

2. The first device of claim 1, wherein the first emitting compound is selected from the group consisting of

3. The first device of claim 1, wherein the emissive layer further comprises a host material.

4. The first device of claim 1, wherein the first device emits a white light at room temperature when a voltage is applied across the organic light emitting device.

5. The first device of claim 1, wherein the emissive layer further comprises a first phosphorescent emitting material.

6. The first device of claim 5, wherein the emissive layer further comprises a second phosphorescent emitting material.

7. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:

an anode;

a cathode; and

an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1;

8. The first device of claim 7, wherein the emissive layer further comprises a second phosphorescent emitting material.

9. The first device of claim 7, wherein the first device emits a white light at room temperature when a voltage is applied across the organic light emitting device.

10. The first device of claim 7, wherein the emissive layer further comprises a host material.

11. The first device of claim 7, wherein the first emitting compound is selected from the group consisting of

12. A consumer product comprising an organic light-emitting device comprising:

an anode;

a cathode; and

an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1;

13. The consumer product of claim 12, wherein the consumer product is one of a flat panel display, a computer monitor, a medical monitor, a television, a billboard, a light for interior or exterior illumination and/or signaling, a heads-up display, a fully transparent display, a flexible display, a laser printer, a telephone, a mobile phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a 3-D display, a vehicle, a large area wall, theater or stadium screen, and a sign.

14. The consumer product of claim 12, wherein the first light emitting compound emits a luminescent radiation at room temperature when a voltage is applied across the organic light emitting device, and the luminescent radiation comprises a delayed fluorescence process.

15. The consumer product of claim 12, wherein the emissive layer further comprises a first phosphorescent emitting material.