Organic light-emitting materials and devices

• US 9,761,814 B2
• Filed: 11/18/2014
• Issued: 09/12/2017
• Est. Priority Date: 11/18/2014
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Xia, Chuanjun, Tsai, Jui-Yi
• Primary Examiner(s): CLARK, GREGORY D
• Application Number:
  US14/546,024
• Publication Number:
  US 20160141525A1
• Time in Patent Office: 1,029 Days
• CPC Class Codes: C07F 7/0812 comprising a heterocyclic ring
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/40 Organosilicon compounds, e.g. TIPS pentacene
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

A novel compound containing two silicon centers with carbazole, dibenzothiophene, or triphenylene building blocks connected to the silicon is disclosed. The disclosed compound is useful as a host material in the emissive layers in phosphorescent OLEDs.

Claims

1. A compound having a structure according to Formula II:

2. The compound of claim 1, wherein the compound is selected from the group consisting of:

3. A device comprising one or more organic light emitting devices, wherein each of the organic light emitting device comprising:

an anode;

a cathode; and

an organic layer, disposed between the anode and the cathode, the organic layer comprising a compound having a structure according to Formula II;

4. The device of claim 3, wherein the organic layer is an emissive layer and the compound of Formula I is a host.

5. The device of claim 3, wherein the organic layer further comprises an emissive dopant that is a transition metal complex having at least one ligand selected from the group consisting of:

6. The device of claim 3, wherein the organic layer is a blocking layer and the compound having the structure according to Formula I is a blocking material in the organic layer.

7. The device of claim 3, wherein the organic layer is an electron transporting layer and the compound having the structure according to Formula I is an electron transporting material in the organic layer.

8. The device of claim 3, wherein the device is selected from the group consisting of a consumer product, an electronic component module, an organic light-emitting device, and a lighting panel.

10. The device of claim 8, wherein the consumer product is selected from the group consisting of flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads-up displays, fully or partially transparent displays, flexible displays, laser printers, telephones, cell phones, tablets, phablets, personal digital assistants (PDAs), laptop computers, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, vehicles, a wall, theater or stadium screen, and a sign.

11. The device of claim 3, wherein the compound is selected from the group consisting of:

9. A formulation comprising a compound having a structure according to Formula II: