Organic light-emitting materials and devices

Patent metadata

Field	Value
Publication number	US-9761814-B2
Application number	US-201414546024-A
Country	US
Kind code	B2
Filing date	Nov 18, 2014
Priority date	Nov 18, 2014
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

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.

First claim

What is claimed is:

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

wherein R A and R A ′ are each independently selected from the group consisting of:

 and

wherein R B is selected from the group consisting of

wherein when R B is R B6 , R B7 , R B8 , R B9 , or R B11 then R A and R A ′ are not R A2 , R A4 , R A19 , A 20 , R A39 or R A40.

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:

wherein R A and R A ′ are each independently selected from the group consisting of:

 and

wherein R B is selected from the group consisting of:

wherein when R B is R B6 , R B7 , R B8 , R B9 or R B11 then R A and R A′ are not R A2 , R A4 , R A19 , A 20 , R A39 or R A40.

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:

wherein R a , R b , R c , and R d may represent mono, di, tri, or tetra substitution, or no substitution;
wherein R a , R b , R c , and R d are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein two adjacent substituents of R a , R b , R c , and R d are optionally joined to form a fused ring or form a multidentate ligand.

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.

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

wherein R A and R A ′ are each independently selected from the group consisting of:

 and

wherein R B is selected from the group consisting of:

Assignees

• Universal Display Corp

Inventors

• Xia Chuanjun
• Tsai Jui-Yi

Classifications

• H01L51/0074

  Electricity · mapped topic

• C07F7/0812 Primary

  comprising a heterocyclic ring · CPC title

• H01L51/0059

  Electricity · mapped topic

• H01L51/0085

  Electricity · mapped topic

• H01L51/5016

  Electricity · mapped topic